From fe3ad537f66660d1546212de8122f6e0098ca852 Mon Sep 17 00:00:00 2001
From: MobiusDevelopment <8391001+MobiusDevelopment@users.noreply.github.com>
Date: Fri, 11 Dec 2020 22:44:51 +0000
Subject: [PATCH] Addition of DragonWeaponDefence effect.

---
 .../ai/others/DragonWeaponListeners.java      | 455 ++++++++++++++++++
 .../scripts/handlers/EffectMasterHandler.java |   1 +
 .../effecthandlers/DragonWeaponDefence.java   |  31 ++
 .../game/data/stats/skills/documentation.txt  |   1 +
 .../model/actor/instance/PlayerInstance.java  |  12 +
 .../gameserver/model/stats/Formulas.java      |  13 +-
 .../gameserver/model/stats/Stat.java          |   1 +
 .../ai/others/DragonWeaponListeners.java      | 455 ++++++++++++++++++
 .../scripts/handlers/EffectMasterHandler.java |   1 +
 .../effecthandlers/DragonWeaponDefence.java   |  31 ++
 .../game/data/stats/skills/documentation.txt  |   1 +
 .../model/actor/instance/PlayerInstance.java  |  12 +
 .../gameserver/model/stats/Formulas.java      |  13 +-
 .../gameserver/model/stats/Stat.java          |   1 +
 .../ai/others/DragonWeaponListeners.java      | 455 ++++++++++++++++++
 .../scripts/handlers/EffectMasterHandler.java |   1 +
 .../effecthandlers/DragonWeaponDefence.java   |  31 ++
 .../game/data/stats/skills/documentation.txt  |   1 +
 .../model/actor/instance/PlayerInstance.java  |  12 +
 .../gameserver/model/stats/Formulas.java      |  13 +-
 .../gameserver/model/stats/Stat.java          |   1 +
 .../ai/others/DragonWeaponListeners.java      | 455 ++++++++++++++++++
 .../scripts/handlers/EffectMasterHandler.java |   1 +
 .../effecthandlers/DragonWeaponDefence.java   |  31 ++
 .../game/data/stats/skills/documentation.txt  |   1 +
 .../model/actor/instance/PlayerInstance.java  |  12 +
 .../gameserver/model/stats/Formulas.java      |  13 +-
 .../gameserver/model/stats/Stat.java          |   1 +
 .../ai/others/DragonWeaponListeners.java      | 455 ++++++++++++++++++
 .../scripts/handlers/EffectMasterHandler.java |   1 +
 .../effecthandlers/DragonWeaponDefence.java   |  31 ++
 .../game/data/stats/skills/documentation.txt  |   1 +
 .../model/actor/instance/PlayerInstance.java  |  12 +
 .../gameserver/model/stats/Formulas.java      |  13 +-
 .../gameserver/model/stats/Stat.java          |   1 +
 .../ai/others/DragonWeaponListeners.java      | 455 ++++++++++++++++++
 .../scripts/handlers/EffectMasterHandler.java |   1 +
 .../effecthandlers/DragonWeaponDefence.java   |  31 ++
 .../game/data/stats/skills/documentation.txt  |   1 +
 .../model/actor/instance/PlayerInstance.java  |  12 +
 .../gameserver/model/stats/Formulas.java      |  13 +-
 .../gameserver/model/stats/Stat.java          |   1 +
 .../ai/others/DragonWeaponListeners.java      | 455 ++++++++++++++++++
 .../scripts/handlers/EffectMasterHandler.java |   1 +
 .../effecthandlers/DragonWeaponDefence.java   |  31 ++
 .../game/data/stats/skills/documentation.txt  |   1 +
 .../model/actor/instance/PlayerInstance.java  |  12 +
 .../gameserver/model/stats/Formulas.java      |  13 +-
 .../gameserver/model/stats/Stat.java          |   1 +
 .../ai/others/DragonWeaponListeners.java      | 455 ++++++++++++++++++
 .../scripts/handlers/EffectMasterHandler.java |   1 +
 .../effecthandlers/DragonWeaponDefence.java   |  31 ++
 .../game/data/stats/skills/documentation.txt  |   1 +
 .../model/actor/instance/PlayerInstance.java  |  12 +
 .../gameserver/model/stats/Formulas.java      |  13 +-
 .../gameserver/model/stats/Stat.java          |   1 +
 .../ai/others/DragonWeaponListeners.java      | 455 ++++++++++++++++++
 .../scripts/handlers/EffectMasterHandler.java |   1 +
 .../effecthandlers/DragonWeaponDefence.java   |  31 ++
 .../game/data/stats/skills/documentation.txt  |   1 +
 .../model/actor/instance/PlayerInstance.java  |  12 +
 .../gameserver/model/stats/Formulas.java      |  13 +-
 .../gameserver/model/stats/Stat.java          |   1 +
 63 files changed, 4617 insertions(+), 9 deletions(-)
 create mode 100644 L2J_Mobius_1.0_Ertheia/dist/game/data/scripts/ai/others/DragonWeaponListeners.java
 create mode 100644 L2J_Mobius_1.0_Ertheia/dist/game/data/scripts/handlers/effecthandlers/DragonWeaponDefence.java
 create mode 100644 L2J_Mobius_2.5_Underground/dist/game/data/scripts/ai/others/DragonWeaponListeners.java
 create mode 100644 L2J_Mobius_2.5_Underground/dist/game/data/scripts/handlers/effecthandlers/DragonWeaponDefence.java
 create mode 100644 L2J_Mobius_3.0_Helios/dist/game/data/scripts/ai/others/DragonWeaponListeners.java
 create mode 100644 L2J_Mobius_3.0_Helios/dist/game/data/scripts/handlers/effecthandlers/DragonWeaponDefence.java
 create mode 100644 L2J_Mobius_4.0_GrandCrusade/dist/game/data/scripts/ai/others/DragonWeaponListeners.java
 create mode 100644 L2J_Mobius_4.0_GrandCrusade/dist/game/data/scripts/handlers/effecthandlers/DragonWeaponDefence.java
 create mode 100644 L2J_Mobius_5.0_Salvation/dist/game/data/scripts/ai/others/DragonWeaponListeners.java
 create mode 100644 L2J_Mobius_5.0_Salvation/dist/game/data/scripts/handlers/effecthandlers/DragonWeaponDefence.java
 create mode 100644 L2J_Mobius_5.5_EtinasFate/dist/game/data/scripts/ai/others/DragonWeaponListeners.java
 create mode 100644 L2J_Mobius_5.5_EtinasFate/dist/game/data/scripts/handlers/effecthandlers/DragonWeaponDefence.java
 create mode 100644 L2J_Mobius_6.0_Fafurion/dist/game/data/scripts/ai/others/DragonWeaponListeners.java
 create mode 100644 L2J_Mobius_6.0_Fafurion/dist/game/data/scripts/handlers/effecthandlers/DragonWeaponDefence.java
 create mode 100644 L2J_Mobius_7.0_PreludeOfWar/dist/game/data/scripts/ai/others/DragonWeaponListeners.java
 create mode 100644 L2J_Mobius_7.0_PreludeOfWar/dist/game/data/scripts/handlers/effecthandlers/DragonWeaponDefence.java
 create mode 100644 L2J_Mobius_8.0_Homunculus/dist/game/data/scripts/ai/others/DragonWeaponListeners.java
 create mode 100644 L2J_Mobius_8.0_Homunculus/dist/game/data/scripts/handlers/effecthandlers/DragonWeaponDefence.java

diff --git a/L2J_Mobius_1.0_Ertheia/dist/game/data/scripts/ai/others/DragonWeaponListeners.java b/L2J_Mobius_1.0_Ertheia/dist/game/data/scripts/ai/others/DragonWeaponListeners.java
new file mode 100644
index 0000000000..085dcb2ca6
--- /dev/null
+++ b/L2J_Mobius_1.0_Ertheia/dist/game/data/scripts/ai/others/DragonWeaponListeners.java
@@ -0,0 +1,455 @@
+/*
+ * This file is part of the L2J Mobius project.
+ * 
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ * 
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+package ai.others;
+
+import org.l2jmobius.commons.util.CommonUtil;
+import org.l2jmobius.gameserver.model.actor.instance.PlayerInstance;
+import org.l2jmobius.gameserver.model.events.EventType;
+import org.l2jmobius.gameserver.model.events.ListenerRegisterType;
+import org.l2jmobius.gameserver.model.events.annotations.Id;
+import org.l2jmobius.gameserver.model.events.annotations.RegisterEvent;
+import org.l2jmobius.gameserver.model.events.annotations.RegisterType;
+import org.l2jmobius.gameserver.model.events.impl.creature.player.OnPlayerItemEquip;
+import org.l2jmobius.gameserver.model.events.impl.creature.player.OnPlayerItemUnequip;
+import org.l2jmobius.gameserver.model.events.impl.creature.player.OnPlayerLogin;
+import org.l2jmobius.gameserver.model.items.Weapon;
+
+import ai.AbstractNpcAI;
+
+/**
+ * @author Mobius
+ */
+public class DragonWeaponListeners extends AbstractNpcAI
+{
+	private static final int[] WEAPON_IDS =
+	{
+		36417,
+		36418,
+		36419,
+		36420,
+		36421,
+		36422,
+		36423,
+		36424,
+		36425,
+		36426,
+		36441,
+		36442,
+		36443,
+		36444,
+		36445,
+		36446,
+		36447,
+		36448,
+		36449,
+		36450,
+		36465,
+		36466,
+		36467,
+		36468,
+		36469,
+		36470,
+		36471,
+		36472,
+		36473,
+		36474,
+		36489,
+		36490,
+		36491,
+		36492,
+		36493,
+		36494,
+		36495,
+		36496,
+		36497,
+		36498,
+		36427,
+		36428,
+		36429,
+		36430,
+		36431,
+		36432,
+		36433,
+		36451,
+		36452,
+		36453,
+		36454,
+		36455,
+		36456,
+		36457,
+		36475,
+		36476,
+		36477,
+		36478,
+		36479,
+		36480,
+		36481,
+		36499,
+		36500,
+		36501,
+		36502,
+		36503,
+		36504,
+		36505,
+		36434,
+		36435,
+		36436,
+		36437,
+		36438,
+		36439,
+		36440,
+		36458,
+		36459,
+		36460,
+		36461,
+		36462,
+		36463,
+		36464,
+		36482,
+		36483,
+		36484,
+		36485,
+		36486,
+		36487,
+		36488,
+		36506,
+		36507,
+		36508,
+		36509,
+		36510,
+		36511,
+		36512,
+		80066,
+		80067,
+		80068,
+		80069,
+		80070,
+		80071,
+		80072,
+		80073,
+		80074,
+		80075,
+		80076,
+		80077,
+		80078,
+		80079,
+		80080,
+		80081,
+		80082,
+		80083,
+		80084,
+		80085,
+		80086,
+		80087,
+		80088,
+		80089,
+		80315,
+		80316,
+		80317,
+		80318,
+	};
+	
+	@RegisterEvent(EventType.ON_PLAYER_LOGIN)
+	@RegisterType(ListenerRegisterType.GLOBAL_PLAYERS)
+	public void onPlayerLogin(OnPlayerLogin event)
+	{
+		final PlayerInstance player = event.getPlayer();
+		if (player != null)
+		{
+			final Weapon weapon = player.getActiveWeaponItem();
+			if ((weapon != null) && CommonUtil.contains(WEAPON_IDS, weapon.getId()))
+			{
+				player.setDragonWeaponEquipped(true);
+			}
+		}
+	}
+	
+	@RegisterEvent(EventType.ON_PLAYER_ITEM_EQUIP)
+	@RegisterType(ListenerRegisterType.ITEM)
+	@Id(36417)
+	@Id(36418)
+	@Id(36419)
+	@Id(36420)
+	@Id(36421)
+	@Id(36422)
+	@Id(36423)
+	@Id(36424)
+	@Id(36425)
+	@Id(36426)
+	@Id(36441)
+	@Id(36442)
+	@Id(36443)
+	@Id(36444)
+	@Id(36445)
+	@Id(36446)
+	@Id(36447)
+	@Id(36448)
+	@Id(36449)
+	@Id(36450)
+	@Id(36465)
+	@Id(36466)
+	@Id(36467)
+	@Id(36468)
+	@Id(36469)
+	@Id(36470)
+	@Id(36471)
+	@Id(36472)
+	@Id(36473)
+	@Id(36474)
+	@Id(36489)
+	@Id(36490)
+	@Id(36491)
+	@Id(36492)
+	@Id(36493)
+	@Id(36494)
+	@Id(36495)
+	@Id(36496)
+	@Id(36497)
+	@Id(36498)
+	@Id(36427)
+	@Id(36428)
+	@Id(36429)
+	@Id(36430)
+	@Id(36431)
+	@Id(36432)
+	@Id(36433)
+	@Id(36451)
+	@Id(36452)
+	@Id(36453)
+	@Id(36454)
+	@Id(36455)
+	@Id(36456)
+	@Id(36457)
+	@Id(36475)
+	@Id(36476)
+	@Id(36477)
+	@Id(36478)
+	@Id(36479)
+	@Id(36480)
+	@Id(36481)
+	@Id(36499)
+	@Id(36500)
+	@Id(36501)
+	@Id(36502)
+	@Id(36503)
+	@Id(36504)
+	@Id(36505)
+	@Id(36434)
+	@Id(36435)
+	@Id(36436)
+	@Id(36437)
+	@Id(36438)
+	@Id(36439)
+	@Id(36440)
+	@Id(36458)
+	@Id(36459)
+	@Id(36460)
+	@Id(36461)
+	@Id(36462)
+	@Id(36463)
+	@Id(36464)
+	@Id(36482)
+	@Id(36483)
+	@Id(36484)
+	@Id(36485)
+	@Id(36486)
+	@Id(36487)
+	@Id(36488)
+	@Id(36506)
+	@Id(36507)
+	@Id(36508)
+	@Id(36509)
+	@Id(36510)
+	@Id(36511)
+	@Id(36512)
+	@Id(80066)
+	@Id(80067)
+	@Id(80068)
+	@Id(80069)
+	@Id(80070)
+	@Id(80071)
+	@Id(80072)
+	@Id(80073)
+	@Id(80074)
+	@Id(80075)
+	@Id(80076)
+	@Id(80077)
+	@Id(80078)
+	@Id(80079)
+	@Id(80080)
+	@Id(80081)
+	@Id(80082)
+	@Id(80083)
+	@Id(80084)
+	@Id(80085)
+	@Id(80086)
+	@Id(80087)
+	@Id(80088)
+	@Id(80089)
+	@Id(80315)
+	@Id(80316)
+	@Id(80317)
+	@Id(80318)
+	public void onPlayerItemEquip(OnPlayerItemEquip event)
+	{
+		final PlayerInstance player = event.getPlayer();
+		if (player != null)
+		{
+			player.setDragonWeaponEquipped(true);
+		}
+	}
+	
+	@RegisterEvent(EventType.ON_PLAYER_ITEM_UNEQUIP)
+	@RegisterType(ListenerRegisterType.ITEM)
+	@Id(36417)
+	@Id(36418)
+	@Id(36419)
+	@Id(36420)
+	@Id(36421)
+	@Id(36422)
+	@Id(36423)
+	@Id(36424)
+	@Id(36425)
+	@Id(36426)
+	@Id(36441)
+	@Id(36442)
+	@Id(36443)
+	@Id(36444)
+	@Id(36445)
+	@Id(36446)
+	@Id(36447)
+	@Id(36448)
+	@Id(36449)
+	@Id(36450)
+	@Id(36465)
+	@Id(36466)
+	@Id(36467)
+	@Id(36468)
+	@Id(36469)
+	@Id(36470)
+	@Id(36471)
+	@Id(36472)
+	@Id(36473)
+	@Id(36474)
+	@Id(36489)
+	@Id(36490)
+	@Id(36491)
+	@Id(36492)
+	@Id(36493)
+	@Id(36494)
+	@Id(36495)
+	@Id(36496)
+	@Id(36497)
+	@Id(36498)
+	@Id(36427)
+	@Id(36428)
+	@Id(36429)
+	@Id(36430)
+	@Id(36431)
+	@Id(36432)
+	@Id(36433)
+	@Id(36451)
+	@Id(36452)
+	@Id(36453)
+	@Id(36454)
+	@Id(36455)
+	@Id(36456)
+	@Id(36457)
+	@Id(36475)
+	@Id(36476)
+	@Id(36477)
+	@Id(36478)
+	@Id(36479)
+	@Id(36480)
+	@Id(36481)
+	@Id(36499)
+	@Id(36500)
+	@Id(36501)
+	@Id(36502)
+	@Id(36503)
+	@Id(36504)
+	@Id(36505)
+	@Id(36434)
+	@Id(36435)
+	@Id(36436)
+	@Id(36437)
+	@Id(36438)
+	@Id(36439)
+	@Id(36440)
+	@Id(36458)
+	@Id(36459)
+	@Id(36460)
+	@Id(36461)
+	@Id(36462)
+	@Id(36463)
+	@Id(36464)
+	@Id(36482)
+	@Id(36483)
+	@Id(36484)
+	@Id(36485)
+	@Id(36486)
+	@Id(36487)
+	@Id(36488)
+	@Id(36506)
+	@Id(36507)
+	@Id(36508)
+	@Id(36509)
+	@Id(36510)
+	@Id(36511)
+	@Id(36512)
+	@Id(80066)
+	@Id(80067)
+	@Id(80068)
+	@Id(80069)
+	@Id(80070)
+	@Id(80071)
+	@Id(80072)
+	@Id(80073)
+	@Id(80074)
+	@Id(80075)
+	@Id(80076)
+	@Id(80077)
+	@Id(80078)
+	@Id(80079)
+	@Id(80080)
+	@Id(80081)
+	@Id(80082)
+	@Id(80083)
+	@Id(80084)
+	@Id(80085)
+	@Id(80086)
+	@Id(80087)
+	@Id(80088)
+	@Id(80089)
+	@Id(80315)
+	@Id(80316)
+	@Id(80317)
+	@Id(80318)
+	public void onPlayerItemUnequip(OnPlayerItemUnequip event)
+	{
+		final PlayerInstance player = event.getPlayer();
+		if (player != null)
+		{
+			player.setDragonWeaponEquipped(false);
+		}
+	}
+	
+	public static void main(String[] args)
+	{
+		new DragonWeaponListeners();
+	}
+}
diff --git a/L2J_Mobius_1.0_Ertheia/dist/game/data/scripts/handlers/EffectMasterHandler.java b/L2J_Mobius_1.0_Ertheia/dist/game/data/scripts/handlers/EffectMasterHandler.java
index f74b919d21..625acb31bd 100644
--- a/L2J_Mobius_1.0_Ertheia/dist/game/data/scripts/handlers/EffectMasterHandler.java
+++ b/L2J_Mobius_1.0_Ertheia/dist/game/data/scripts/handlers/EffectMasterHandler.java
@@ -131,6 +131,7 @@ public class EffectMasterHandler
 		EffectHandler.getInstance().registerHandler("DispelBySlotMyself", DispelBySlotMyself::new);
 		EffectHandler.getInstance().registerHandler("DispelBySlotProbability", DispelBySlotProbability::new);
 		EffectHandler.getInstance().registerHandler("DoubleCast", DoubleCast::new);
+		EffectHandler.getInstance().registerHandler("DragonWeaponDefence", DragonWeaponDefence::new);
 		EffectHandler.getInstance().registerHandler("DuelistFury", DuelistFury::new);
 		EffectHandler.getInstance().registerHandler("EnableCloak", EnableCloak::new);
 		EffectHandler.getInstance().registerHandler("EnergyAttack", EnergyAttack::new);
diff --git a/L2J_Mobius_1.0_Ertheia/dist/game/data/scripts/handlers/effecthandlers/DragonWeaponDefence.java b/L2J_Mobius_1.0_Ertheia/dist/game/data/scripts/handlers/effecthandlers/DragonWeaponDefence.java
new file mode 100644
index 0000000000..476fb537ad
--- /dev/null
+++ b/L2J_Mobius_1.0_Ertheia/dist/game/data/scripts/handlers/effecthandlers/DragonWeaponDefence.java
@@ -0,0 +1,31 @@
+/*
+ * This file is part of the L2J Mobius project.
+ * 
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ * 
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+package handlers.effecthandlers;
+
+import org.l2jmobius.gameserver.model.StatSet;
+import org.l2jmobius.gameserver.model.stats.Stat;
+
+/**
+ * @author Mobius
+ */
+public class DragonWeaponDefence extends AbstractStatPercentEffect
+{
+	public DragonWeaponDefence(StatSet params)
+	{
+		super(params, Stat.DRAGON_WEAPON_DEFENCE);
+	}
+}
diff --git a/L2J_Mobius_1.0_Ertheia/dist/game/data/stats/skills/documentation.txt b/L2J_Mobius_1.0_Ertheia/dist/game/data/stats/skills/documentation.txt
index ce8789186d..8412091b1d 100644
--- a/L2J_Mobius_1.0_Ertheia/dist/game/data/stats/skills/documentation.txt
+++ b/L2J_Mobius_1.0_Ertheia/dist/game/data/stats/skills/documentation.txt
@@ -101,6 +101,7 @@ DispelBySlot: Removes given amount of target's effects by specified AbnormalType
 DispelBySlotMyself: Removes given amount of effects by specified AbnormalType
 DispelBySlotProbability: Removes given amount of effects by specified AbnormalType at a given rate.
 DoubleCast: Triggers Fire, Water, Wind, Earth stance and enables the ability to cast two skills at once.
+DragonWeaponDefence: Dragon weapon defence stat. (l2jmobius)
 DuelistFury: Synergy effect for Faceoff effect. (l2jmobius)
 EnableCloak: See/unsee cloaks.
 EnemyCharge: Charges towards the enemy. Rush Impact.
diff --git a/L2J_Mobius_1.0_Ertheia/java/org/l2jmobius/gameserver/model/actor/instance/PlayerInstance.java b/L2J_Mobius_1.0_Ertheia/java/org/l2jmobius/gameserver/model/actor/instance/PlayerInstance.java
index ffc9ac7430..ed26f41c12 100644
--- a/L2J_Mobius_1.0_Ertheia/java/org/l2jmobius/gameserver/model/actor/instance/PlayerInstance.java
+++ b/L2J_Mobius_1.0_Ertheia/java/org/l2jmobius/gameserver/model/actor/instance/PlayerInstance.java
@@ -748,6 +748,8 @@ public class PlayerInstance extends Playable
 	private int _cursedWeaponEquippedId = 0;
 	private boolean _combatFlagEquippedId = false;
 	
+	private boolean _isDragonWeaponEquipped = false;
+	
 	private boolean _canRevive = true;
 	private int _reviveRequested = 0;
 	private double _revivePower = 0;
@@ -11378,6 +11380,16 @@ public class PlayerInstance extends Playable
 		return _cursedWeaponEquippedId;
 	}
 	
+	public void setDragonWeaponEquipped(boolean value)
+	{
+		_isDragonWeaponEquipped = value;
+	}
+	
+	public boolean isDragonWeaponEquipped()
+	{
+		return _isDragonWeaponEquipped;
+	}
+	
 	public boolean isCombatFlagEquipped()
 	{
 		return _combatFlagEquippedId;
diff --git a/L2J_Mobius_1.0_Ertheia/java/org/l2jmobius/gameserver/model/stats/Formulas.java b/L2J_Mobius_1.0_Ertheia/java/org/l2jmobius/gameserver/model/stats/Formulas.java
index 07500a7bfc..4ba05aa2a2 100644
--- a/L2J_Mobius_1.0_Ertheia/java/org/l2jmobius/gameserver/model/stats/Formulas.java
+++ b/L2J_Mobius_1.0_Ertheia/java/org/l2jmobius/gameserver/model/stats/Formulas.java
@@ -1604,7 +1604,18 @@ public class Formulas
 				pvpDefense = target.getStat().getValue(Stat.PVP_PHYSICAL_ATTACK_DEFENCE, 1) * Config.PVP_PHYSICAL_ATTACK_DEFENCE_MULTIPLIERS[targetPlayer.getClassId().getId()];
 			}
 			
-			return Math.max(0.05, 1 + (pvpAttack - pvpDefense)); // Bonus should not be negative.
+			// Dragon weapon defence stat.
+			final double dragonDefense;
+			if (attackerPlayer.isDragonWeaponEquipped())
+			{
+				dragonDefense = target.getStat().getValue(Stat.DRAGON_WEAPON_DEFENCE, 1);
+			}
+			else
+			{
+				dragonDefense = 1;
+			}
+			
+			return Math.max(0.05, dragonDefense * (1 + (pvpAttack - pvpDefense))); // Bonus should not be negative.
 		}
 		
 		// PvE Bonus
diff --git a/L2J_Mobius_1.0_Ertheia/java/org/l2jmobius/gameserver/model/stats/Stat.java b/L2J_Mobius_1.0_Ertheia/java/org/l2jmobius/gameserver/model/stats/Stat.java
index 39806ebbfb..641f7cce81 100644
--- a/L2J_Mobius_1.0_Ertheia/java/org/l2jmobius/gameserver/model/stats/Stat.java
+++ b/L2J_Mobius_1.0_Ertheia/java/org/l2jmobius/gameserver/model/stats/Stat.java
@@ -87,6 +87,7 @@ public enum Stat
 	CRITICAL_DAMAGE_ADD("cAtkAdd"), // this is another type for special critical damage mods - vicious stance, critical power and critical damage SA
 	HATE_ATTACK("attackHate"),
 	REAR_DAMAGE_RATE("rearDamage"),
+	DRAGON_WEAPON_DEFENCE("dragonWeaponDefence"),
 	
 	// PVP BONUS
 	PVP_PHYSICAL_ATTACK_DAMAGE("pvpPhysDmg"),
diff --git a/L2J_Mobius_2.5_Underground/dist/game/data/scripts/ai/others/DragonWeaponListeners.java b/L2J_Mobius_2.5_Underground/dist/game/data/scripts/ai/others/DragonWeaponListeners.java
new file mode 100644
index 0000000000..085dcb2ca6
--- /dev/null
+++ b/L2J_Mobius_2.5_Underground/dist/game/data/scripts/ai/others/DragonWeaponListeners.java
@@ -0,0 +1,455 @@
+/*
+ * This file is part of the L2J Mobius project.
+ * 
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ * 
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+package ai.others;
+
+import org.l2jmobius.commons.util.CommonUtil;
+import org.l2jmobius.gameserver.model.actor.instance.PlayerInstance;
+import org.l2jmobius.gameserver.model.events.EventType;
+import org.l2jmobius.gameserver.model.events.ListenerRegisterType;
+import org.l2jmobius.gameserver.model.events.annotations.Id;
+import org.l2jmobius.gameserver.model.events.annotations.RegisterEvent;
+import org.l2jmobius.gameserver.model.events.annotations.RegisterType;
+import org.l2jmobius.gameserver.model.events.impl.creature.player.OnPlayerItemEquip;
+import org.l2jmobius.gameserver.model.events.impl.creature.player.OnPlayerItemUnequip;
+import org.l2jmobius.gameserver.model.events.impl.creature.player.OnPlayerLogin;
+import org.l2jmobius.gameserver.model.items.Weapon;
+
+import ai.AbstractNpcAI;
+
+/**
+ * @author Mobius
+ */
+public class DragonWeaponListeners extends AbstractNpcAI
+{
+	private static final int[] WEAPON_IDS =
+	{
+		36417,
+		36418,
+		36419,
+		36420,
+		36421,
+		36422,
+		36423,
+		36424,
+		36425,
+		36426,
+		36441,
+		36442,
+		36443,
+		36444,
+		36445,
+		36446,
+		36447,
+		36448,
+		36449,
+		36450,
+		36465,
+		36466,
+		36467,
+		36468,
+		36469,
+		36470,
+		36471,
+		36472,
+		36473,
+		36474,
+		36489,
+		36490,
+		36491,
+		36492,
+		36493,
+		36494,
+		36495,
+		36496,
+		36497,
+		36498,
+		36427,
+		36428,
+		36429,
+		36430,
+		36431,
+		36432,
+		36433,
+		36451,
+		36452,
+		36453,
+		36454,
+		36455,
+		36456,
+		36457,
+		36475,
+		36476,
+		36477,
+		36478,
+		36479,
+		36480,
+		36481,
+		36499,
+		36500,
+		36501,
+		36502,
+		36503,
+		36504,
+		36505,
+		36434,
+		36435,
+		36436,
+		36437,
+		36438,
+		36439,
+		36440,
+		36458,
+		36459,
+		36460,
+		36461,
+		36462,
+		36463,
+		36464,
+		36482,
+		36483,
+		36484,
+		36485,
+		36486,
+		36487,
+		36488,
+		36506,
+		36507,
+		36508,
+		36509,
+		36510,
+		36511,
+		36512,
+		80066,
+		80067,
+		80068,
+		80069,
+		80070,
+		80071,
+		80072,
+		80073,
+		80074,
+		80075,
+		80076,
+		80077,
+		80078,
+		80079,
+		80080,
+		80081,
+		80082,
+		80083,
+		80084,
+		80085,
+		80086,
+		80087,
+		80088,
+		80089,
+		80315,
+		80316,
+		80317,
+		80318,
+	};
+	
+	@RegisterEvent(EventType.ON_PLAYER_LOGIN)
+	@RegisterType(ListenerRegisterType.GLOBAL_PLAYERS)
+	public void onPlayerLogin(OnPlayerLogin event)
+	{
+		final PlayerInstance player = event.getPlayer();
+		if (player != null)
+		{
+			final Weapon weapon = player.getActiveWeaponItem();
+			if ((weapon != null) && CommonUtil.contains(WEAPON_IDS, weapon.getId()))
+			{
+				player.setDragonWeaponEquipped(true);
+			}
+		}
+	}
+	
+	@RegisterEvent(EventType.ON_PLAYER_ITEM_EQUIP)
+	@RegisterType(ListenerRegisterType.ITEM)
+	@Id(36417)
+	@Id(36418)
+	@Id(36419)
+	@Id(36420)
+	@Id(36421)
+	@Id(36422)
+	@Id(36423)
+	@Id(36424)
+	@Id(36425)
+	@Id(36426)
+	@Id(36441)
+	@Id(36442)
+	@Id(36443)
+	@Id(36444)
+	@Id(36445)
+	@Id(36446)
+	@Id(36447)
+	@Id(36448)
+	@Id(36449)
+	@Id(36450)
+	@Id(36465)
+	@Id(36466)
+	@Id(36467)
+	@Id(36468)
+	@Id(36469)
+	@Id(36470)
+	@Id(36471)
+	@Id(36472)
+	@Id(36473)
+	@Id(36474)
+	@Id(36489)
+	@Id(36490)
+	@Id(36491)
+	@Id(36492)
+	@Id(36493)
+	@Id(36494)
+	@Id(36495)
+	@Id(36496)
+	@Id(36497)
+	@Id(36498)
+	@Id(36427)
+	@Id(36428)
+	@Id(36429)
+	@Id(36430)
+	@Id(36431)
+	@Id(36432)
+	@Id(36433)
+	@Id(36451)
+	@Id(36452)
+	@Id(36453)
+	@Id(36454)
+	@Id(36455)
+	@Id(36456)
+	@Id(36457)
+	@Id(36475)
+	@Id(36476)
+	@Id(36477)
+	@Id(36478)
+	@Id(36479)
+	@Id(36480)
+	@Id(36481)
+	@Id(36499)
+	@Id(36500)
+	@Id(36501)
+	@Id(36502)
+	@Id(36503)
+	@Id(36504)
+	@Id(36505)
+	@Id(36434)
+	@Id(36435)
+	@Id(36436)
+	@Id(36437)
+	@Id(36438)
+	@Id(36439)
+	@Id(36440)
+	@Id(36458)
+	@Id(36459)
+	@Id(36460)
+	@Id(36461)
+	@Id(36462)
+	@Id(36463)
+	@Id(36464)
+	@Id(36482)
+	@Id(36483)
+	@Id(36484)
+	@Id(36485)
+	@Id(36486)
+	@Id(36487)
+	@Id(36488)
+	@Id(36506)
+	@Id(36507)
+	@Id(36508)
+	@Id(36509)
+	@Id(36510)
+	@Id(36511)
+	@Id(36512)
+	@Id(80066)
+	@Id(80067)
+	@Id(80068)
+	@Id(80069)
+	@Id(80070)
+	@Id(80071)
+	@Id(80072)
+	@Id(80073)
+	@Id(80074)
+	@Id(80075)
+	@Id(80076)
+	@Id(80077)
+	@Id(80078)
+	@Id(80079)
+	@Id(80080)
+	@Id(80081)
+	@Id(80082)
+	@Id(80083)
+	@Id(80084)
+	@Id(80085)
+	@Id(80086)
+	@Id(80087)
+	@Id(80088)
+	@Id(80089)
+	@Id(80315)
+	@Id(80316)
+	@Id(80317)
+	@Id(80318)
+	public void onPlayerItemEquip(OnPlayerItemEquip event)
+	{
+		final PlayerInstance player = event.getPlayer();
+		if (player != null)
+		{
+			player.setDragonWeaponEquipped(true);
+		}
+	}
+	
+	@RegisterEvent(EventType.ON_PLAYER_ITEM_UNEQUIP)
+	@RegisterType(ListenerRegisterType.ITEM)
+	@Id(36417)
+	@Id(36418)
+	@Id(36419)
+	@Id(36420)
+	@Id(36421)
+	@Id(36422)
+	@Id(36423)
+	@Id(36424)
+	@Id(36425)
+	@Id(36426)
+	@Id(36441)
+	@Id(36442)
+	@Id(36443)
+	@Id(36444)
+	@Id(36445)
+	@Id(36446)
+	@Id(36447)
+	@Id(36448)
+	@Id(36449)
+	@Id(36450)
+	@Id(36465)
+	@Id(36466)
+	@Id(36467)
+	@Id(36468)
+	@Id(36469)
+	@Id(36470)
+	@Id(36471)
+	@Id(36472)
+	@Id(36473)
+	@Id(36474)
+	@Id(36489)
+	@Id(36490)
+	@Id(36491)
+	@Id(36492)
+	@Id(36493)
+	@Id(36494)
+	@Id(36495)
+	@Id(36496)
+	@Id(36497)
+	@Id(36498)
+	@Id(36427)
+	@Id(36428)
+	@Id(36429)
+	@Id(36430)
+	@Id(36431)
+	@Id(36432)
+	@Id(36433)
+	@Id(36451)
+	@Id(36452)
+	@Id(36453)
+	@Id(36454)
+	@Id(36455)
+	@Id(36456)
+	@Id(36457)
+	@Id(36475)
+	@Id(36476)
+	@Id(36477)
+	@Id(36478)
+	@Id(36479)
+	@Id(36480)
+	@Id(36481)
+	@Id(36499)
+	@Id(36500)
+	@Id(36501)
+	@Id(36502)
+	@Id(36503)
+	@Id(36504)
+	@Id(36505)
+	@Id(36434)
+	@Id(36435)
+	@Id(36436)
+	@Id(36437)
+	@Id(36438)
+	@Id(36439)
+	@Id(36440)
+	@Id(36458)
+	@Id(36459)
+	@Id(36460)
+	@Id(36461)
+	@Id(36462)
+	@Id(36463)
+	@Id(36464)
+	@Id(36482)
+	@Id(36483)
+	@Id(36484)
+	@Id(36485)
+	@Id(36486)
+	@Id(36487)
+	@Id(36488)
+	@Id(36506)
+	@Id(36507)
+	@Id(36508)
+	@Id(36509)
+	@Id(36510)
+	@Id(36511)
+	@Id(36512)
+	@Id(80066)
+	@Id(80067)
+	@Id(80068)
+	@Id(80069)
+	@Id(80070)
+	@Id(80071)
+	@Id(80072)
+	@Id(80073)
+	@Id(80074)
+	@Id(80075)
+	@Id(80076)
+	@Id(80077)
+	@Id(80078)
+	@Id(80079)
+	@Id(80080)
+	@Id(80081)
+	@Id(80082)
+	@Id(80083)
+	@Id(80084)
+	@Id(80085)
+	@Id(80086)
+	@Id(80087)
+	@Id(80088)
+	@Id(80089)
+	@Id(80315)
+	@Id(80316)
+	@Id(80317)
+	@Id(80318)
+	public void onPlayerItemUnequip(OnPlayerItemUnequip event)
+	{
+		final PlayerInstance player = event.getPlayer();
+		if (player != null)
+		{
+			player.setDragonWeaponEquipped(false);
+		}
+	}
+	
+	public static void main(String[] args)
+	{
+		new DragonWeaponListeners();
+	}
+}
diff --git a/L2J_Mobius_2.5_Underground/dist/game/data/scripts/handlers/EffectMasterHandler.java b/L2J_Mobius_2.5_Underground/dist/game/data/scripts/handlers/EffectMasterHandler.java
index f74b919d21..625acb31bd 100644
--- a/L2J_Mobius_2.5_Underground/dist/game/data/scripts/handlers/EffectMasterHandler.java
+++ b/L2J_Mobius_2.5_Underground/dist/game/data/scripts/handlers/EffectMasterHandler.java
@@ -131,6 +131,7 @@ public class EffectMasterHandler
 		EffectHandler.getInstance().registerHandler("DispelBySlotMyself", DispelBySlotMyself::new);
 		EffectHandler.getInstance().registerHandler("DispelBySlotProbability", DispelBySlotProbability::new);
 		EffectHandler.getInstance().registerHandler("DoubleCast", DoubleCast::new);
+		EffectHandler.getInstance().registerHandler("DragonWeaponDefence", DragonWeaponDefence::new);
 		EffectHandler.getInstance().registerHandler("DuelistFury", DuelistFury::new);
 		EffectHandler.getInstance().registerHandler("EnableCloak", EnableCloak::new);
 		EffectHandler.getInstance().registerHandler("EnergyAttack", EnergyAttack::new);
diff --git a/L2J_Mobius_2.5_Underground/dist/game/data/scripts/handlers/effecthandlers/DragonWeaponDefence.java b/L2J_Mobius_2.5_Underground/dist/game/data/scripts/handlers/effecthandlers/DragonWeaponDefence.java
new file mode 100644
index 0000000000..476fb537ad
--- /dev/null
+++ b/L2J_Mobius_2.5_Underground/dist/game/data/scripts/handlers/effecthandlers/DragonWeaponDefence.java
@@ -0,0 +1,31 @@
+/*
+ * This file is part of the L2J Mobius project.
+ * 
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ * 
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+package handlers.effecthandlers;
+
+import org.l2jmobius.gameserver.model.StatSet;
+import org.l2jmobius.gameserver.model.stats.Stat;
+
+/**
+ * @author Mobius
+ */
+public class DragonWeaponDefence extends AbstractStatPercentEffect
+{
+	public DragonWeaponDefence(StatSet params)
+	{
+		super(params, Stat.DRAGON_WEAPON_DEFENCE);
+	}
+}
diff --git a/L2J_Mobius_2.5_Underground/dist/game/data/stats/skills/documentation.txt b/L2J_Mobius_2.5_Underground/dist/game/data/stats/skills/documentation.txt
index ce8789186d..8412091b1d 100644
--- a/L2J_Mobius_2.5_Underground/dist/game/data/stats/skills/documentation.txt
+++ b/L2J_Mobius_2.5_Underground/dist/game/data/stats/skills/documentation.txt
@@ -101,6 +101,7 @@ DispelBySlot: Removes given amount of target's effects by specified AbnormalType
 DispelBySlotMyself: Removes given amount of effects by specified AbnormalType
 DispelBySlotProbability: Removes given amount of effects by specified AbnormalType at a given rate.
 DoubleCast: Triggers Fire, Water, Wind, Earth stance and enables the ability to cast two skills at once.
+DragonWeaponDefence: Dragon weapon defence stat. (l2jmobius)
 DuelistFury: Synergy effect for Faceoff effect. (l2jmobius)
 EnableCloak: See/unsee cloaks.
 EnemyCharge: Charges towards the enemy. Rush Impact.
diff --git a/L2J_Mobius_2.5_Underground/java/org/l2jmobius/gameserver/model/actor/instance/PlayerInstance.java b/L2J_Mobius_2.5_Underground/java/org/l2jmobius/gameserver/model/actor/instance/PlayerInstance.java
index dbe9c5ff54..9969ad0c39 100644
--- a/L2J_Mobius_2.5_Underground/java/org/l2jmobius/gameserver/model/actor/instance/PlayerInstance.java
+++ b/L2J_Mobius_2.5_Underground/java/org/l2jmobius/gameserver/model/actor/instance/PlayerInstance.java
@@ -750,6 +750,8 @@ public class PlayerInstance extends Playable
 	private int _cursedWeaponEquippedId = 0;
 	private boolean _combatFlagEquippedId = false;
 	
+	private boolean _isDragonWeaponEquipped = false;
+	
 	private boolean _canRevive = true;
 	private int _reviveRequested = 0;
 	private double _revivePower = 0;
@@ -11385,6 +11387,16 @@ public class PlayerInstance extends Playable
 		return _cursedWeaponEquippedId;
 	}
 	
+	public void setDragonWeaponEquipped(boolean value)
+	{
+		_isDragonWeaponEquipped = value;
+	}
+	
+	public boolean isDragonWeaponEquipped()
+	{
+		return _isDragonWeaponEquipped;
+	}
+	
 	public boolean isCombatFlagEquipped()
 	{
 		return _combatFlagEquippedId;
diff --git a/L2J_Mobius_2.5_Underground/java/org/l2jmobius/gameserver/model/stats/Formulas.java b/L2J_Mobius_2.5_Underground/java/org/l2jmobius/gameserver/model/stats/Formulas.java
index 07500a7bfc..4ba05aa2a2 100644
--- a/L2J_Mobius_2.5_Underground/java/org/l2jmobius/gameserver/model/stats/Formulas.java
+++ b/L2J_Mobius_2.5_Underground/java/org/l2jmobius/gameserver/model/stats/Formulas.java
@@ -1604,7 +1604,18 @@ public class Formulas
 				pvpDefense = target.getStat().getValue(Stat.PVP_PHYSICAL_ATTACK_DEFENCE, 1) * Config.PVP_PHYSICAL_ATTACK_DEFENCE_MULTIPLIERS[targetPlayer.getClassId().getId()];
 			}
 			
-			return Math.max(0.05, 1 + (pvpAttack - pvpDefense)); // Bonus should not be negative.
+			// Dragon weapon defence stat.
+			final double dragonDefense;
+			if (attackerPlayer.isDragonWeaponEquipped())
+			{
+				dragonDefense = target.getStat().getValue(Stat.DRAGON_WEAPON_DEFENCE, 1);
+			}
+			else
+			{
+				dragonDefense = 1;
+			}
+			
+			return Math.max(0.05, dragonDefense * (1 + (pvpAttack - pvpDefense))); // Bonus should not be negative.
 		}
 		
 		// PvE Bonus
diff --git a/L2J_Mobius_2.5_Underground/java/org/l2jmobius/gameserver/model/stats/Stat.java b/L2J_Mobius_2.5_Underground/java/org/l2jmobius/gameserver/model/stats/Stat.java
index 39806ebbfb..641f7cce81 100644
--- a/L2J_Mobius_2.5_Underground/java/org/l2jmobius/gameserver/model/stats/Stat.java
+++ b/L2J_Mobius_2.5_Underground/java/org/l2jmobius/gameserver/model/stats/Stat.java
@@ -87,6 +87,7 @@ public enum Stat
 	CRITICAL_DAMAGE_ADD("cAtkAdd"), // this is another type for special critical damage mods - vicious stance, critical power and critical damage SA
 	HATE_ATTACK("attackHate"),
 	REAR_DAMAGE_RATE("rearDamage"),
+	DRAGON_WEAPON_DEFENCE("dragonWeaponDefence"),
 	
 	// PVP BONUS
 	PVP_PHYSICAL_ATTACK_DAMAGE("pvpPhysDmg"),
diff --git a/L2J_Mobius_3.0_Helios/dist/game/data/scripts/ai/others/DragonWeaponListeners.java b/L2J_Mobius_3.0_Helios/dist/game/data/scripts/ai/others/DragonWeaponListeners.java
new file mode 100644
index 0000000000..085dcb2ca6
--- /dev/null
+++ b/L2J_Mobius_3.0_Helios/dist/game/data/scripts/ai/others/DragonWeaponListeners.java
@@ -0,0 +1,455 @@
+/*
+ * This file is part of the L2J Mobius project.
+ * 
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ * 
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+package ai.others;
+
+import org.l2jmobius.commons.util.CommonUtil;
+import org.l2jmobius.gameserver.model.actor.instance.PlayerInstance;
+import org.l2jmobius.gameserver.model.events.EventType;
+import org.l2jmobius.gameserver.model.events.ListenerRegisterType;
+import org.l2jmobius.gameserver.model.events.annotations.Id;
+import org.l2jmobius.gameserver.model.events.annotations.RegisterEvent;
+import org.l2jmobius.gameserver.model.events.annotations.RegisterType;
+import org.l2jmobius.gameserver.model.events.impl.creature.player.OnPlayerItemEquip;
+import org.l2jmobius.gameserver.model.events.impl.creature.player.OnPlayerItemUnequip;
+import org.l2jmobius.gameserver.model.events.impl.creature.player.OnPlayerLogin;
+import org.l2jmobius.gameserver.model.items.Weapon;
+
+import ai.AbstractNpcAI;
+
+/**
+ * @author Mobius
+ */
+public class DragonWeaponListeners extends AbstractNpcAI
+{
+	private static final int[] WEAPON_IDS =
+	{
+		36417,
+		36418,
+		36419,
+		36420,
+		36421,
+		36422,
+		36423,
+		36424,
+		36425,
+		36426,
+		36441,
+		36442,
+		36443,
+		36444,
+		36445,
+		36446,
+		36447,
+		36448,
+		36449,
+		36450,
+		36465,
+		36466,
+		36467,
+		36468,
+		36469,
+		36470,
+		36471,
+		36472,
+		36473,
+		36474,
+		36489,
+		36490,
+		36491,
+		36492,
+		36493,
+		36494,
+		36495,
+		36496,
+		36497,
+		36498,
+		36427,
+		36428,
+		36429,
+		36430,
+		36431,
+		36432,
+		36433,
+		36451,
+		36452,
+		36453,
+		36454,
+		36455,
+		36456,
+		36457,
+		36475,
+		36476,
+		36477,
+		36478,
+		36479,
+		36480,
+		36481,
+		36499,
+		36500,
+		36501,
+		36502,
+		36503,
+		36504,
+		36505,
+		36434,
+		36435,
+		36436,
+		36437,
+		36438,
+		36439,
+		36440,
+		36458,
+		36459,
+		36460,
+		36461,
+		36462,
+		36463,
+		36464,
+		36482,
+		36483,
+		36484,
+		36485,
+		36486,
+		36487,
+		36488,
+		36506,
+		36507,
+		36508,
+		36509,
+		36510,
+		36511,
+		36512,
+		80066,
+		80067,
+		80068,
+		80069,
+		80070,
+		80071,
+		80072,
+		80073,
+		80074,
+		80075,
+		80076,
+		80077,
+		80078,
+		80079,
+		80080,
+		80081,
+		80082,
+		80083,
+		80084,
+		80085,
+		80086,
+		80087,
+		80088,
+		80089,
+		80315,
+		80316,
+		80317,
+		80318,
+	};
+	
+	@RegisterEvent(EventType.ON_PLAYER_LOGIN)
+	@RegisterType(ListenerRegisterType.GLOBAL_PLAYERS)
+	public void onPlayerLogin(OnPlayerLogin event)
+	{
+		final PlayerInstance player = event.getPlayer();
+		if (player != null)
+		{
+			final Weapon weapon = player.getActiveWeaponItem();
+			if ((weapon != null) && CommonUtil.contains(WEAPON_IDS, weapon.getId()))
+			{
+				player.setDragonWeaponEquipped(true);
+			}
+		}
+	}
+	
+	@RegisterEvent(EventType.ON_PLAYER_ITEM_EQUIP)
+	@RegisterType(ListenerRegisterType.ITEM)
+	@Id(36417)
+	@Id(36418)
+	@Id(36419)
+	@Id(36420)
+	@Id(36421)
+	@Id(36422)
+	@Id(36423)
+	@Id(36424)
+	@Id(36425)
+	@Id(36426)
+	@Id(36441)
+	@Id(36442)
+	@Id(36443)
+	@Id(36444)
+	@Id(36445)
+	@Id(36446)
+	@Id(36447)
+	@Id(36448)
+	@Id(36449)
+	@Id(36450)
+	@Id(36465)
+	@Id(36466)
+	@Id(36467)
+	@Id(36468)
+	@Id(36469)
+	@Id(36470)
+	@Id(36471)
+	@Id(36472)
+	@Id(36473)
+	@Id(36474)
+	@Id(36489)
+	@Id(36490)
+	@Id(36491)
+	@Id(36492)
+	@Id(36493)
+	@Id(36494)
+	@Id(36495)
+	@Id(36496)
+	@Id(36497)
+	@Id(36498)
+	@Id(36427)
+	@Id(36428)
+	@Id(36429)
+	@Id(36430)
+	@Id(36431)
+	@Id(36432)
+	@Id(36433)
+	@Id(36451)
+	@Id(36452)
+	@Id(36453)
+	@Id(36454)
+	@Id(36455)
+	@Id(36456)
+	@Id(36457)
+	@Id(36475)
+	@Id(36476)
+	@Id(36477)
+	@Id(36478)
+	@Id(36479)
+	@Id(36480)
+	@Id(36481)
+	@Id(36499)
+	@Id(36500)
+	@Id(36501)
+	@Id(36502)
+	@Id(36503)
+	@Id(36504)
+	@Id(36505)
+	@Id(36434)
+	@Id(36435)
+	@Id(36436)
+	@Id(36437)
+	@Id(36438)
+	@Id(36439)
+	@Id(36440)
+	@Id(36458)
+	@Id(36459)
+	@Id(36460)
+	@Id(36461)
+	@Id(36462)
+	@Id(36463)
+	@Id(36464)
+	@Id(36482)
+	@Id(36483)
+	@Id(36484)
+	@Id(36485)
+	@Id(36486)
+	@Id(36487)
+	@Id(36488)
+	@Id(36506)
+	@Id(36507)
+	@Id(36508)
+	@Id(36509)
+	@Id(36510)
+	@Id(36511)
+	@Id(36512)
+	@Id(80066)
+	@Id(80067)
+	@Id(80068)
+	@Id(80069)
+	@Id(80070)
+	@Id(80071)
+	@Id(80072)
+	@Id(80073)
+	@Id(80074)
+	@Id(80075)
+	@Id(80076)
+	@Id(80077)
+	@Id(80078)
+	@Id(80079)
+	@Id(80080)
+	@Id(80081)
+	@Id(80082)
+	@Id(80083)
+	@Id(80084)
+	@Id(80085)
+	@Id(80086)
+	@Id(80087)
+	@Id(80088)
+	@Id(80089)
+	@Id(80315)
+	@Id(80316)
+	@Id(80317)
+	@Id(80318)
+	public void onPlayerItemEquip(OnPlayerItemEquip event)
+	{
+		final PlayerInstance player = event.getPlayer();
+		if (player != null)
+		{
+			player.setDragonWeaponEquipped(true);
+		}
+	}
+	
+	@RegisterEvent(EventType.ON_PLAYER_ITEM_UNEQUIP)
+	@RegisterType(ListenerRegisterType.ITEM)
+	@Id(36417)
+	@Id(36418)
+	@Id(36419)
+	@Id(36420)
+	@Id(36421)
+	@Id(36422)
+	@Id(36423)
+	@Id(36424)
+	@Id(36425)
+	@Id(36426)
+	@Id(36441)
+	@Id(36442)
+	@Id(36443)
+	@Id(36444)
+	@Id(36445)
+	@Id(36446)
+	@Id(36447)
+	@Id(36448)
+	@Id(36449)
+	@Id(36450)
+	@Id(36465)
+	@Id(36466)
+	@Id(36467)
+	@Id(36468)
+	@Id(36469)
+	@Id(36470)
+	@Id(36471)
+	@Id(36472)
+	@Id(36473)
+	@Id(36474)
+	@Id(36489)
+	@Id(36490)
+	@Id(36491)
+	@Id(36492)
+	@Id(36493)
+	@Id(36494)
+	@Id(36495)
+	@Id(36496)
+	@Id(36497)
+	@Id(36498)
+	@Id(36427)
+	@Id(36428)
+	@Id(36429)
+	@Id(36430)
+	@Id(36431)
+	@Id(36432)
+	@Id(36433)
+	@Id(36451)
+	@Id(36452)
+	@Id(36453)
+	@Id(36454)
+	@Id(36455)
+	@Id(36456)
+	@Id(36457)
+	@Id(36475)
+	@Id(36476)
+	@Id(36477)
+	@Id(36478)
+	@Id(36479)
+	@Id(36480)
+	@Id(36481)
+	@Id(36499)
+	@Id(36500)
+	@Id(36501)
+	@Id(36502)
+	@Id(36503)
+	@Id(36504)
+	@Id(36505)
+	@Id(36434)
+	@Id(36435)
+	@Id(36436)
+	@Id(36437)
+	@Id(36438)
+	@Id(36439)
+	@Id(36440)
+	@Id(36458)
+	@Id(36459)
+	@Id(36460)
+	@Id(36461)
+	@Id(36462)
+	@Id(36463)
+	@Id(36464)
+	@Id(36482)
+	@Id(36483)
+	@Id(36484)
+	@Id(36485)
+	@Id(36486)
+	@Id(36487)
+	@Id(36488)
+	@Id(36506)
+	@Id(36507)
+	@Id(36508)
+	@Id(36509)
+	@Id(36510)
+	@Id(36511)
+	@Id(36512)
+	@Id(80066)
+	@Id(80067)
+	@Id(80068)
+	@Id(80069)
+	@Id(80070)
+	@Id(80071)
+	@Id(80072)
+	@Id(80073)
+	@Id(80074)
+	@Id(80075)
+	@Id(80076)
+	@Id(80077)
+	@Id(80078)
+	@Id(80079)
+	@Id(80080)
+	@Id(80081)
+	@Id(80082)
+	@Id(80083)
+	@Id(80084)
+	@Id(80085)
+	@Id(80086)
+	@Id(80087)
+	@Id(80088)
+	@Id(80089)
+	@Id(80315)
+	@Id(80316)
+	@Id(80317)
+	@Id(80318)
+	public void onPlayerItemUnequip(OnPlayerItemUnequip event)
+	{
+		final PlayerInstance player = event.getPlayer();
+		if (player != null)
+		{
+			player.setDragonWeaponEquipped(false);
+		}
+	}
+	
+	public static void main(String[] args)
+	{
+		new DragonWeaponListeners();
+	}
+}
diff --git a/L2J_Mobius_3.0_Helios/dist/game/data/scripts/handlers/EffectMasterHandler.java b/L2J_Mobius_3.0_Helios/dist/game/data/scripts/handlers/EffectMasterHandler.java
index f74b919d21..625acb31bd 100644
--- a/L2J_Mobius_3.0_Helios/dist/game/data/scripts/handlers/EffectMasterHandler.java
+++ b/L2J_Mobius_3.0_Helios/dist/game/data/scripts/handlers/EffectMasterHandler.java
@@ -131,6 +131,7 @@ public class EffectMasterHandler
 		EffectHandler.getInstance().registerHandler("DispelBySlotMyself", DispelBySlotMyself::new);
 		EffectHandler.getInstance().registerHandler("DispelBySlotProbability", DispelBySlotProbability::new);
 		EffectHandler.getInstance().registerHandler("DoubleCast", DoubleCast::new);
+		EffectHandler.getInstance().registerHandler("DragonWeaponDefence", DragonWeaponDefence::new);
 		EffectHandler.getInstance().registerHandler("DuelistFury", DuelistFury::new);
 		EffectHandler.getInstance().registerHandler("EnableCloak", EnableCloak::new);
 		EffectHandler.getInstance().registerHandler("EnergyAttack", EnergyAttack::new);
diff --git a/L2J_Mobius_3.0_Helios/dist/game/data/scripts/handlers/effecthandlers/DragonWeaponDefence.java b/L2J_Mobius_3.0_Helios/dist/game/data/scripts/handlers/effecthandlers/DragonWeaponDefence.java
new file mode 100644
index 0000000000..476fb537ad
--- /dev/null
+++ b/L2J_Mobius_3.0_Helios/dist/game/data/scripts/handlers/effecthandlers/DragonWeaponDefence.java
@@ -0,0 +1,31 @@
+/*
+ * This file is part of the L2J Mobius project.
+ * 
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ * 
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+package handlers.effecthandlers;
+
+import org.l2jmobius.gameserver.model.StatSet;
+import org.l2jmobius.gameserver.model.stats.Stat;
+
+/**
+ * @author Mobius
+ */
+public class DragonWeaponDefence extends AbstractStatPercentEffect
+{
+	public DragonWeaponDefence(StatSet params)
+	{
+		super(params, Stat.DRAGON_WEAPON_DEFENCE);
+	}
+}
diff --git a/L2J_Mobius_3.0_Helios/dist/game/data/stats/skills/documentation.txt b/L2J_Mobius_3.0_Helios/dist/game/data/stats/skills/documentation.txt
index ce8789186d..8412091b1d 100644
--- a/L2J_Mobius_3.0_Helios/dist/game/data/stats/skills/documentation.txt
+++ b/L2J_Mobius_3.0_Helios/dist/game/data/stats/skills/documentation.txt
@@ -101,6 +101,7 @@ DispelBySlot: Removes given amount of target's effects by specified AbnormalType
 DispelBySlotMyself: Removes given amount of effects by specified AbnormalType
 DispelBySlotProbability: Removes given amount of effects by specified AbnormalType at a given rate.
 DoubleCast: Triggers Fire, Water, Wind, Earth stance and enables the ability to cast two skills at once.
+DragonWeaponDefence: Dragon weapon defence stat. (l2jmobius)
 DuelistFury: Synergy effect for Faceoff effect. (l2jmobius)
 EnableCloak: See/unsee cloaks.
 EnemyCharge: Charges towards the enemy. Rush Impact.
diff --git a/L2J_Mobius_3.0_Helios/java/org/l2jmobius/gameserver/model/actor/instance/PlayerInstance.java b/L2J_Mobius_3.0_Helios/java/org/l2jmobius/gameserver/model/actor/instance/PlayerInstance.java
index ce0325d7aa..73153217a8 100644
--- a/L2J_Mobius_3.0_Helios/java/org/l2jmobius/gameserver/model/actor/instance/PlayerInstance.java
+++ b/L2J_Mobius_3.0_Helios/java/org/l2jmobius/gameserver/model/actor/instance/PlayerInstance.java
@@ -752,6 +752,8 @@ public class PlayerInstance extends Playable
 	private int _cursedWeaponEquippedId = 0;
 	private boolean _combatFlagEquippedId = false;
 	
+	private boolean _isDragonWeaponEquipped = false;
+	
 	private boolean _canRevive = true;
 	private int _reviveRequested = 0;
 	private double _revivePower = 0;
@@ -11387,6 +11389,16 @@ public class PlayerInstance extends Playable
 		return _cursedWeaponEquippedId;
 	}
 	
+	public void setDragonWeaponEquipped(boolean value)
+	{
+		_isDragonWeaponEquipped = value;
+	}
+	
+	public boolean isDragonWeaponEquipped()
+	{
+		return _isDragonWeaponEquipped;
+	}
+	
 	public boolean isCombatFlagEquipped()
 	{
 		return _combatFlagEquippedId;
diff --git a/L2J_Mobius_3.0_Helios/java/org/l2jmobius/gameserver/model/stats/Formulas.java b/L2J_Mobius_3.0_Helios/java/org/l2jmobius/gameserver/model/stats/Formulas.java
index 07500a7bfc..4ba05aa2a2 100644
--- a/L2J_Mobius_3.0_Helios/java/org/l2jmobius/gameserver/model/stats/Formulas.java
+++ b/L2J_Mobius_3.0_Helios/java/org/l2jmobius/gameserver/model/stats/Formulas.java
@@ -1604,7 +1604,18 @@ public class Formulas
 				pvpDefense = target.getStat().getValue(Stat.PVP_PHYSICAL_ATTACK_DEFENCE, 1) * Config.PVP_PHYSICAL_ATTACK_DEFENCE_MULTIPLIERS[targetPlayer.getClassId().getId()];
 			}
 			
-			return Math.max(0.05, 1 + (pvpAttack - pvpDefense)); // Bonus should not be negative.
+			// Dragon weapon defence stat.
+			final double dragonDefense;
+			if (attackerPlayer.isDragonWeaponEquipped())
+			{
+				dragonDefense = target.getStat().getValue(Stat.DRAGON_WEAPON_DEFENCE, 1);
+			}
+			else
+			{
+				dragonDefense = 1;
+			}
+			
+			return Math.max(0.05, dragonDefense * (1 + (pvpAttack - pvpDefense))); // Bonus should not be negative.
 		}
 		
 		// PvE Bonus
diff --git a/L2J_Mobius_3.0_Helios/java/org/l2jmobius/gameserver/model/stats/Stat.java b/L2J_Mobius_3.0_Helios/java/org/l2jmobius/gameserver/model/stats/Stat.java
index 39806ebbfb..641f7cce81 100644
--- a/L2J_Mobius_3.0_Helios/java/org/l2jmobius/gameserver/model/stats/Stat.java
+++ b/L2J_Mobius_3.0_Helios/java/org/l2jmobius/gameserver/model/stats/Stat.java
@@ -87,6 +87,7 @@ public enum Stat
 	CRITICAL_DAMAGE_ADD("cAtkAdd"), // this is another type for special critical damage mods - vicious stance, critical power and critical damage SA
 	HATE_ATTACK("attackHate"),
 	REAR_DAMAGE_RATE("rearDamage"),
+	DRAGON_WEAPON_DEFENCE("dragonWeaponDefence"),
 	
 	// PVP BONUS
 	PVP_PHYSICAL_ATTACK_DAMAGE("pvpPhysDmg"),
diff --git a/L2J_Mobius_4.0_GrandCrusade/dist/game/data/scripts/ai/others/DragonWeaponListeners.java b/L2J_Mobius_4.0_GrandCrusade/dist/game/data/scripts/ai/others/DragonWeaponListeners.java
new file mode 100644
index 0000000000..085dcb2ca6
--- /dev/null
+++ b/L2J_Mobius_4.0_GrandCrusade/dist/game/data/scripts/ai/others/DragonWeaponListeners.java
@@ -0,0 +1,455 @@
+/*
+ * This file is part of the L2J Mobius project.
+ * 
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ * 
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+package ai.others;
+
+import org.l2jmobius.commons.util.CommonUtil;
+import org.l2jmobius.gameserver.model.actor.instance.PlayerInstance;
+import org.l2jmobius.gameserver.model.events.EventType;
+import org.l2jmobius.gameserver.model.events.ListenerRegisterType;
+import org.l2jmobius.gameserver.model.events.annotations.Id;
+import org.l2jmobius.gameserver.model.events.annotations.RegisterEvent;
+import org.l2jmobius.gameserver.model.events.annotations.RegisterType;
+import org.l2jmobius.gameserver.model.events.impl.creature.player.OnPlayerItemEquip;
+import org.l2jmobius.gameserver.model.events.impl.creature.player.OnPlayerItemUnequip;
+import org.l2jmobius.gameserver.model.events.impl.creature.player.OnPlayerLogin;
+import org.l2jmobius.gameserver.model.items.Weapon;
+
+import ai.AbstractNpcAI;
+
+/**
+ * @author Mobius
+ */
+public class DragonWeaponListeners extends AbstractNpcAI
+{
+	private static final int[] WEAPON_IDS =
+	{
+		36417,
+		36418,
+		36419,
+		36420,
+		36421,
+		36422,
+		36423,
+		36424,
+		36425,
+		36426,
+		36441,
+		36442,
+		36443,
+		36444,
+		36445,
+		36446,
+		36447,
+		36448,
+		36449,
+		36450,
+		36465,
+		36466,
+		36467,
+		36468,
+		36469,
+		36470,
+		36471,
+		36472,
+		36473,
+		36474,
+		36489,
+		36490,
+		36491,
+		36492,
+		36493,
+		36494,
+		36495,
+		36496,
+		36497,
+		36498,
+		36427,
+		36428,
+		36429,
+		36430,
+		36431,
+		36432,
+		36433,
+		36451,
+		36452,
+		36453,
+		36454,
+		36455,
+		36456,
+		36457,
+		36475,
+		36476,
+		36477,
+		36478,
+		36479,
+		36480,
+		36481,
+		36499,
+		36500,
+		36501,
+		36502,
+		36503,
+		36504,
+		36505,
+		36434,
+		36435,
+		36436,
+		36437,
+		36438,
+		36439,
+		36440,
+		36458,
+		36459,
+		36460,
+		36461,
+		36462,
+		36463,
+		36464,
+		36482,
+		36483,
+		36484,
+		36485,
+		36486,
+		36487,
+		36488,
+		36506,
+		36507,
+		36508,
+		36509,
+		36510,
+		36511,
+		36512,
+		80066,
+		80067,
+		80068,
+		80069,
+		80070,
+		80071,
+		80072,
+		80073,
+		80074,
+		80075,
+		80076,
+		80077,
+		80078,
+		80079,
+		80080,
+		80081,
+		80082,
+		80083,
+		80084,
+		80085,
+		80086,
+		80087,
+		80088,
+		80089,
+		80315,
+		80316,
+		80317,
+		80318,
+	};
+	
+	@RegisterEvent(EventType.ON_PLAYER_LOGIN)
+	@RegisterType(ListenerRegisterType.GLOBAL_PLAYERS)
+	public void onPlayerLogin(OnPlayerLogin event)
+	{
+		final PlayerInstance player = event.getPlayer();
+		if (player != null)
+		{
+			final Weapon weapon = player.getActiveWeaponItem();
+			if ((weapon != null) && CommonUtil.contains(WEAPON_IDS, weapon.getId()))
+			{
+				player.setDragonWeaponEquipped(true);
+			}
+		}
+	}
+	
+	@RegisterEvent(EventType.ON_PLAYER_ITEM_EQUIP)
+	@RegisterType(ListenerRegisterType.ITEM)
+	@Id(36417)
+	@Id(36418)
+	@Id(36419)
+	@Id(36420)
+	@Id(36421)
+	@Id(36422)
+	@Id(36423)
+	@Id(36424)
+	@Id(36425)
+	@Id(36426)
+	@Id(36441)
+	@Id(36442)
+	@Id(36443)
+	@Id(36444)
+	@Id(36445)
+	@Id(36446)
+	@Id(36447)
+	@Id(36448)
+	@Id(36449)
+	@Id(36450)
+	@Id(36465)
+	@Id(36466)
+	@Id(36467)
+	@Id(36468)
+	@Id(36469)
+	@Id(36470)
+	@Id(36471)
+	@Id(36472)
+	@Id(36473)
+	@Id(36474)
+	@Id(36489)
+	@Id(36490)
+	@Id(36491)
+	@Id(36492)
+	@Id(36493)
+	@Id(36494)
+	@Id(36495)
+	@Id(36496)
+	@Id(36497)
+	@Id(36498)
+	@Id(36427)
+	@Id(36428)
+	@Id(36429)
+	@Id(36430)
+	@Id(36431)
+	@Id(36432)
+	@Id(36433)
+	@Id(36451)
+	@Id(36452)
+	@Id(36453)
+	@Id(36454)
+	@Id(36455)
+	@Id(36456)
+	@Id(36457)
+	@Id(36475)
+	@Id(36476)
+	@Id(36477)
+	@Id(36478)
+	@Id(36479)
+	@Id(36480)
+	@Id(36481)
+	@Id(36499)
+	@Id(36500)
+	@Id(36501)
+	@Id(36502)
+	@Id(36503)
+	@Id(36504)
+	@Id(36505)
+	@Id(36434)
+	@Id(36435)
+	@Id(36436)
+	@Id(36437)
+	@Id(36438)
+	@Id(36439)
+	@Id(36440)
+	@Id(36458)
+	@Id(36459)
+	@Id(36460)
+	@Id(36461)
+	@Id(36462)
+	@Id(36463)
+	@Id(36464)
+	@Id(36482)
+	@Id(36483)
+	@Id(36484)
+	@Id(36485)
+	@Id(36486)
+	@Id(36487)
+	@Id(36488)
+	@Id(36506)
+	@Id(36507)
+	@Id(36508)
+	@Id(36509)
+	@Id(36510)
+	@Id(36511)
+	@Id(36512)
+	@Id(80066)
+	@Id(80067)
+	@Id(80068)
+	@Id(80069)
+	@Id(80070)
+	@Id(80071)
+	@Id(80072)
+	@Id(80073)
+	@Id(80074)
+	@Id(80075)
+	@Id(80076)
+	@Id(80077)
+	@Id(80078)
+	@Id(80079)
+	@Id(80080)
+	@Id(80081)
+	@Id(80082)
+	@Id(80083)
+	@Id(80084)
+	@Id(80085)
+	@Id(80086)
+	@Id(80087)
+	@Id(80088)
+	@Id(80089)
+	@Id(80315)
+	@Id(80316)
+	@Id(80317)
+	@Id(80318)
+	public void onPlayerItemEquip(OnPlayerItemEquip event)
+	{
+		final PlayerInstance player = event.getPlayer();
+		if (player != null)
+		{
+			player.setDragonWeaponEquipped(true);
+		}
+	}
+	
+	@RegisterEvent(EventType.ON_PLAYER_ITEM_UNEQUIP)
+	@RegisterType(ListenerRegisterType.ITEM)
+	@Id(36417)
+	@Id(36418)
+	@Id(36419)
+	@Id(36420)
+	@Id(36421)
+	@Id(36422)
+	@Id(36423)
+	@Id(36424)
+	@Id(36425)
+	@Id(36426)
+	@Id(36441)
+	@Id(36442)
+	@Id(36443)
+	@Id(36444)
+	@Id(36445)
+	@Id(36446)
+	@Id(36447)
+	@Id(36448)
+	@Id(36449)
+	@Id(36450)
+	@Id(36465)
+	@Id(36466)
+	@Id(36467)
+	@Id(36468)
+	@Id(36469)
+	@Id(36470)
+	@Id(36471)
+	@Id(36472)
+	@Id(36473)
+	@Id(36474)
+	@Id(36489)
+	@Id(36490)
+	@Id(36491)
+	@Id(36492)
+	@Id(36493)
+	@Id(36494)
+	@Id(36495)
+	@Id(36496)
+	@Id(36497)
+	@Id(36498)
+	@Id(36427)
+	@Id(36428)
+	@Id(36429)
+	@Id(36430)
+	@Id(36431)
+	@Id(36432)
+	@Id(36433)
+	@Id(36451)
+	@Id(36452)
+	@Id(36453)
+	@Id(36454)
+	@Id(36455)
+	@Id(36456)
+	@Id(36457)
+	@Id(36475)
+	@Id(36476)
+	@Id(36477)
+	@Id(36478)
+	@Id(36479)
+	@Id(36480)
+	@Id(36481)
+	@Id(36499)
+	@Id(36500)
+	@Id(36501)
+	@Id(36502)
+	@Id(36503)
+	@Id(36504)
+	@Id(36505)
+	@Id(36434)
+	@Id(36435)
+	@Id(36436)
+	@Id(36437)
+	@Id(36438)
+	@Id(36439)
+	@Id(36440)
+	@Id(36458)
+	@Id(36459)
+	@Id(36460)
+	@Id(36461)
+	@Id(36462)
+	@Id(36463)
+	@Id(36464)
+	@Id(36482)
+	@Id(36483)
+	@Id(36484)
+	@Id(36485)
+	@Id(36486)
+	@Id(36487)
+	@Id(36488)
+	@Id(36506)
+	@Id(36507)
+	@Id(36508)
+	@Id(36509)
+	@Id(36510)
+	@Id(36511)
+	@Id(36512)
+	@Id(80066)
+	@Id(80067)
+	@Id(80068)
+	@Id(80069)
+	@Id(80070)
+	@Id(80071)
+	@Id(80072)
+	@Id(80073)
+	@Id(80074)
+	@Id(80075)
+	@Id(80076)
+	@Id(80077)
+	@Id(80078)
+	@Id(80079)
+	@Id(80080)
+	@Id(80081)
+	@Id(80082)
+	@Id(80083)
+	@Id(80084)
+	@Id(80085)
+	@Id(80086)
+	@Id(80087)
+	@Id(80088)
+	@Id(80089)
+	@Id(80315)
+	@Id(80316)
+	@Id(80317)
+	@Id(80318)
+	public void onPlayerItemUnequip(OnPlayerItemUnequip event)
+	{
+		final PlayerInstance player = event.getPlayer();
+		if (player != null)
+		{
+			player.setDragonWeaponEquipped(false);
+		}
+	}
+	
+	public static void main(String[] args)
+	{
+		new DragonWeaponListeners();
+	}
+}
diff --git a/L2J_Mobius_4.0_GrandCrusade/dist/game/data/scripts/handlers/EffectMasterHandler.java b/L2J_Mobius_4.0_GrandCrusade/dist/game/data/scripts/handlers/EffectMasterHandler.java
index 2061d281b9..76a0246550 100644
--- a/L2J_Mobius_4.0_GrandCrusade/dist/game/data/scripts/handlers/EffectMasterHandler.java
+++ b/L2J_Mobius_4.0_GrandCrusade/dist/game/data/scripts/handlers/EffectMasterHandler.java
@@ -135,6 +135,7 @@ public class EffectMasterHandler
 		EffectHandler.getInstance().registerHandler("DispelBySlotMyself", DispelBySlotMyself::new);
 		EffectHandler.getInstance().registerHandler("DispelBySlotProbability", DispelBySlotProbability::new);
 		EffectHandler.getInstance().registerHandler("DoubleCast", DoubleCast::new);
+		EffectHandler.getInstance().registerHandler("DragonWeaponDefence", DragonWeaponDefence::new);
 		EffectHandler.getInstance().registerHandler("DuelistFury", DuelistFury::new);
 		EffectHandler.getInstance().registerHandler("EnableCloak", EnableCloak::new);
 		EffectHandler.getInstance().registerHandler("EnergyAttack", EnergyAttack::new);
diff --git a/L2J_Mobius_4.0_GrandCrusade/dist/game/data/scripts/handlers/effecthandlers/DragonWeaponDefence.java b/L2J_Mobius_4.0_GrandCrusade/dist/game/data/scripts/handlers/effecthandlers/DragonWeaponDefence.java
new file mode 100644
index 0000000000..476fb537ad
--- /dev/null
+++ b/L2J_Mobius_4.0_GrandCrusade/dist/game/data/scripts/handlers/effecthandlers/DragonWeaponDefence.java
@@ -0,0 +1,31 @@
+/*
+ * This file is part of the L2J Mobius project.
+ * 
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ * 
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+package handlers.effecthandlers;
+
+import org.l2jmobius.gameserver.model.StatSet;
+import org.l2jmobius.gameserver.model.stats.Stat;
+
+/**
+ * @author Mobius
+ */
+public class DragonWeaponDefence extends AbstractStatPercentEffect
+{
+	public DragonWeaponDefence(StatSet params)
+	{
+		super(params, Stat.DRAGON_WEAPON_DEFENCE);
+	}
+}
diff --git a/L2J_Mobius_4.0_GrandCrusade/dist/game/data/stats/skills/documentation.txt b/L2J_Mobius_4.0_GrandCrusade/dist/game/data/stats/skills/documentation.txt
index d309fd61b7..73b152d7eb 100644
--- a/L2J_Mobius_4.0_GrandCrusade/dist/game/data/stats/skills/documentation.txt
+++ b/L2J_Mobius_4.0_GrandCrusade/dist/game/data/stats/skills/documentation.txt
@@ -105,6 +105,7 @@ DispelBySlot: Removes given amount of target's effects by specified AbnormalType
 DispelBySlotMyself: Removes given amount of effects by specified AbnormalType
 DispelBySlotProbability: Removes given amount of effects by specified AbnormalType at a given rate.
 DoubleCast: Triggers Fire, Water, Wind, Earth stance and enables the ability to cast two skills at once.
+DragonWeaponDefence: Dragon weapon defence stat. (l2jmobius)
 DuelistFury: Synergy effect for Faceoff effect. (l2jmobius)
 EnableCloak: See/unsee cloaks.
 EnemyCharge: Charges towards the enemy. Rush Impact.
diff --git a/L2J_Mobius_4.0_GrandCrusade/java/org/l2jmobius/gameserver/model/actor/instance/PlayerInstance.java b/L2J_Mobius_4.0_GrandCrusade/java/org/l2jmobius/gameserver/model/actor/instance/PlayerInstance.java
index 14009942b3..ada8740456 100644
--- a/L2J_Mobius_4.0_GrandCrusade/java/org/l2jmobius/gameserver/model/actor/instance/PlayerInstance.java
+++ b/L2J_Mobius_4.0_GrandCrusade/java/org/l2jmobius/gameserver/model/actor/instance/PlayerInstance.java
@@ -757,6 +757,8 @@ public class PlayerInstance extends Playable
 	private int _cursedWeaponEquippedId = 0;
 	private boolean _combatFlagEquippedId = false;
 	
+	private boolean _isDragonWeaponEquipped = false;
+	
 	private boolean _canRevive = true;
 	private int _reviveRequested = 0;
 	private double _revivePower = 0;
@@ -11368,6 +11370,16 @@ public class PlayerInstance extends Playable
 		return _cursedWeaponEquippedId;
 	}
 	
+	public void setDragonWeaponEquipped(boolean value)
+	{
+		_isDragonWeaponEquipped = value;
+	}
+	
+	public boolean isDragonWeaponEquipped()
+	{
+		return _isDragonWeaponEquipped;
+	}
+	
 	public boolean isCombatFlagEquipped()
 	{
 		return _combatFlagEquippedId;
diff --git a/L2J_Mobius_4.0_GrandCrusade/java/org/l2jmobius/gameserver/model/stats/Formulas.java b/L2J_Mobius_4.0_GrandCrusade/java/org/l2jmobius/gameserver/model/stats/Formulas.java
index 07500a7bfc..4ba05aa2a2 100644
--- a/L2J_Mobius_4.0_GrandCrusade/java/org/l2jmobius/gameserver/model/stats/Formulas.java
+++ b/L2J_Mobius_4.0_GrandCrusade/java/org/l2jmobius/gameserver/model/stats/Formulas.java
@@ -1604,7 +1604,18 @@ public class Formulas
 				pvpDefense = target.getStat().getValue(Stat.PVP_PHYSICAL_ATTACK_DEFENCE, 1) * Config.PVP_PHYSICAL_ATTACK_DEFENCE_MULTIPLIERS[targetPlayer.getClassId().getId()];
 			}
 			
-			return Math.max(0.05, 1 + (pvpAttack - pvpDefense)); // Bonus should not be negative.
+			// Dragon weapon defence stat.
+			final double dragonDefense;
+			if (attackerPlayer.isDragonWeaponEquipped())
+			{
+				dragonDefense = target.getStat().getValue(Stat.DRAGON_WEAPON_DEFENCE, 1);
+			}
+			else
+			{
+				dragonDefense = 1;
+			}
+			
+			return Math.max(0.05, dragonDefense * (1 + (pvpAttack - pvpDefense))); // Bonus should not be negative.
 		}
 		
 		// PvE Bonus
diff --git a/L2J_Mobius_4.0_GrandCrusade/java/org/l2jmobius/gameserver/model/stats/Stat.java b/L2J_Mobius_4.0_GrandCrusade/java/org/l2jmobius/gameserver/model/stats/Stat.java
index 3dcb90fea8..62b2bb8ad6 100644
--- a/L2J_Mobius_4.0_GrandCrusade/java/org/l2jmobius/gameserver/model/stats/Stat.java
+++ b/L2J_Mobius_4.0_GrandCrusade/java/org/l2jmobius/gameserver/model/stats/Stat.java
@@ -87,6 +87,7 @@ public enum Stat
 	CRITICAL_DAMAGE_ADD("cAtkAdd"), // this is another type for special critical damage mods - vicious stance, critical power and critical damage SA
 	HATE_ATTACK("attackHate"),
 	REAR_DAMAGE_RATE("rearDamage"),
+	DRAGON_WEAPON_DEFENCE("dragonWeaponDefence"),
 	
 	// PVP BONUS
 	PVP_PHYSICAL_ATTACK_DAMAGE("pvpPhysDmg"),
diff --git a/L2J_Mobius_5.0_Salvation/dist/game/data/scripts/ai/others/DragonWeaponListeners.java b/L2J_Mobius_5.0_Salvation/dist/game/data/scripts/ai/others/DragonWeaponListeners.java
new file mode 100644
index 0000000000..085dcb2ca6
--- /dev/null
+++ b/L2J_Mobius_5.0_Salvation/dist/game/data/scripts/ai/others/DragonWeaponListeners.java
@@ -0,0 +1,455 @@
+/*
+ * This file is part of the L2J Mobius project.
+ * 
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ * 
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+package ai.others;
+
+import org.l2jmobius.commons.util.CommonUtil;
+import org.l2jmobius.gameserver.model.actor.instance.PlayerInstance;
+import org.l2jmobius.gameserver.model.events.EventType;
+import org.l2jmobius.gameserver.model.events.ListenerRegisterType;
+import org.l2jmobius.gameserver.model.events.annotations.Id;
+import org.l2jmobius.gameserver.model.events.annotations.RegisterEvent;
+import org.l2jmobius.gameserver.model.events.annotations.RegisterType;
+import org.l2jmobius.gameserver.model.events.impl.creature.player.OnPlayerItemEquip;
+import org.l2jmobius.gameserver.model.events.impl.creature.player.OnPlayerItemUnequip;
+import org.l2jmobius.gameserver.model.events.impl.creature.player.OnPlayerLogin;
+import org.l2jmobius.gameserver.model.items.Weapon;
+
+import ai.AbstractNpcAI;
+
+/**
+ * @author Mobius
+ */
+public class DragonWeaponListeners extends AbstractNpcAI
+{
+	private static final int[] WEAPON_IDS =
+	{
+		36417,
+		36418,
+		36419,
+		36420,
+		36421,
+		36422,
+		36423,
+		36424,
+		36425,
+		36426,
+		36441,
+		36442,
+		36443,
+		36444,
+		36445,
+		36446,
+		36447,
+		36448,
+		36449,
+		36450,
+		36465,
+		36466,
+		36467,
+		36468,
+		36469,
+		36470,
+		36471,
+		36472,
+		36473,
+		36474,
+		36489,
+		36490,
+		36491,
+		36492,
+		36493,
+		36494,
+		36495,
+		36496,
+		36497,
+		36498,
+		36427,
+		36428,
+		36429,
+		36430,
+		36431,
+		36432,
+		36433,
+		36451,
+		36452,
+		36453,
+		36454,
+		36455,
+		36456,
+		36457,
+		36475,
+		36476,
+		36477,
+		36478,
+		36479,
+		36480,
+		36481,
+		36499,
+		36500,
+		36501,
+		36502,
+		36503,
+		36504,
+		36505,
+		36434,
+		36435,
+		36436,
+		36437,
+		36438,
+		36439,
+		36440,
+		36458,
+		36459,
+		36460,
+		36461,
+		36462,
+		36463,
+		36464,
+		36482,
+		36483,
+		36484,
+		36485,
+		36486,
+		36487,
+		36488,
+		36506,
+		36507,
+		36508,
+		36509,
+		36510,
+		36511,
+		36512,
+		80066,
+		80067,
+		80068,
+		80069,
+		80070,
+		80071,
+		80072,
+		80073,
+		80074,
+		80075,
+		80076,
+		80077,
+		80078,
+		80079,
+		80080,
+		80081,
+		80082,
+		80083,
+		80084,
+		80085,
+		80086,
+		80087,
+		80088,
+		80089,
+		80315,
+		80316,
+		80317,
+		80318,
+	};
+	
+	@RegisterEvent(EventType.ON_PLAYER_LOGIN)
+	@RegisterType(ListenerRegisterType.GLOBAL_PLAYERS)
+	public void onPlayerLogin(OnPlayerLogin event)
+	{
+		final PlayerInstance player = event.getPlayer();
+		if (player != null)
+		{
+			final Weapon weapon = player.getActiveWeaponItem();
+			if ((weapon != null) && CommonUtil.contains(WEAPON_IDS, weapon.getId()))
+			{
+				player.setDragonWeaponEquipped(true);
+			}
+		}
+	}
+	
+	@RegisterEvent(EventType.ON_PLAYER_ITEM_EQUIP)
+	@RegisterType(ListenerRegisterType.ITEM)
+	@Id(36417)
+	@Id(36418)
+	@Id(36419)
+	@Id(36420)
+	@Id(36421)
+	@Id(36422)
+	@Id(36423)
+	@Id(36424)
+	@Id(36425)
+	@Id(36426)
+	@Id(36441)
+	@Id(36442)
+	@Id(36443)
+	@Id(36444)
+	@Id(36445)
+	@Id(36446)
+	@Id(36447)
+	@Id(36448)
+	@Id(36449)
+	@Id(36450)
+	@Id(36465)
+	@Id(36466)
+	@Id(36467)
+	@Id(36468)
+	@Id(36469)
+	@Id(36470)
+	@Id(36471)
+	@Id(36472)
+	@Id(36473)
+	@Id(36474)
+	@Id(36489)
+	@Id(36490)
+	@Id(36491)
+	@Id(36492)
+	@Id(36493)
+	@Id(36494)
+	@Id(36495)
+	@Id(36496)
+	@Id(36497)
+	@Id(36498)
+	@Id(36427)
+	@Id(36428)
+	@Id(36429)
+	@Id(36430)
+	@Id(36431)
+	@Id(36432)
+	@Id(36433)
+	@Id(36451)
+	@Id(36452)
+	@Id(36453)
+	@Id(36454)
+	@Id(36455)
+	@Id(36456)
+	@Id(36457)
+	@Id(36475)
+	@Id(36476)
+	@Id(36477)
+	@Id(36478)
+	@Id(36479)
+	@Id(36480)
+	@Id(36481)
+	@Id(36499)
+	@Id(36500)
+	@Id(36501)
+	@Id(36502)
+	@Id(36503)
+	@Id(36504)
+	@Id(36505)
+	@Id(36434)
+	@Id(36435)
+	@Id(36436)
+	@Id(36437)
+	@Id(36438)
+	@Id(36439)
+	@Id(36440)
+	@Id(36458)
+	@Id(36459)
+	@Id(36460)
+	@Id(36461)
+	@Id(36462)
+	@Id(36463)
+	@Id(36464)
+	@Id(36482)
+	@Id(36483)
+	@Id(36484)
+	@Id(36485)
+	@Id(36486)
+	@Id(36487)
+	@Id(36488)
+	@Id(36506)
+	@Id(36507)
+	@Id(36508)
+	@Id(36509)
+	@Id(36510)
+	@Id(36511)
+	@Id(36512)
+	@Id(80066)
+	@Id(80067)
+	@Id(80068)
+	@Id(80069)
+	@Id(80070)
+	@Id(80071)
+	@Id(80072)
+	@Id(80073)
+	@Id(80074)
+	@Id(80075)
+	@Id(80076)
+	@Id(80077)
+	@Id(80078)
+	@Id(80079)
+	@Id(80080)
+	@Id(80081)
+	@Id(80082)
+	@Id(80083)
+	@Id(80084)
+	@Id(80085)
+	@Id(80086)
+	@Id(80087)
+	@Id(80088)
+	@Id(80089)
+	@Id(80315)
+	@Id(80316)
+	@Id(80317)
+	@Id(80318)
+	public void onPlayerItemEquip(OnPlayerItemEquip event)
+	{
+		final PlayerInstance player = event.getPlayer();
+		if (player != null)
+		{
+			player.setDragonWeaponEquipped(true);
+		}
+	}
+	
+	@RegisterEvent(EventType.ON_PLAYER_ITEM_UNEQUIP)
+	@RegisterType(ListenerRegisterType.ITEM)
+	@Id(36417)
+	@Id(36418)
+	@Id(36419)
+	@Id(36420)
+	@Id(36421)
+	@Id(36422)
+	@Id(36423)
+	@Id(36424)
+	@Id(36425)
+	@Id(36426)
+	@Id(36441)
+	@Id(36442)
+	@Id(36443)
+	@Id(36444)
+	@Id(36445)
+	@Id(36446)
+	@Id(36447)
+	@Id(36448)
+	@Id(36449)
+	@Id(36450)
+	@Id(36465)
+	@Id(36466)
+	@Id(36467)
+	@Id(36468)
+	@Id(36469)
+	@Id(36470)
+	@Id(36471)
+	@Id(36472)
+	@Id(36473)
+	@Id(36474)
+	@Id(36489)
+	@Id(36490)
+	@Id(36491)
+	@Id(36492)
+	@Id(36493)
+	@Id(36494)
+	@Id(36495)
+	@Id(36496)
+	@Id(36497)
+	@Id(36498)
+	@Id(36427)
+	@Id(36428)
+	@Id(36429)
+	@Id(36430)
+	@Id(36431)
+	@Id(36432)
+	@Id(36433)
+	@Id(36451)
+	@Id(36452)
+	@Id(36453)
+	@Id(36454)
+	@Id(36455)
+	@Id(36456)
+	@Id(36457)
+	@Id(36475)
+	@Id(36476)
+	@Id(36477)
+	@Id(36478)
+	@Id(36479)
+	@Id(36480)
+	@Id(36481)
+	@Id(36499)
+	@Id(36500)
+	@Id(36501)
+	@Id(36502)
+	@Id(36503)
+	@Id(36504)
+	@Id(36505)
+	@Id(36434)
+	@Id(36435)
+	@Id(36436)
+	@Id(36437)
+	@Id(36438)
+	@Id(36439)
+	@Id(36440)
+	@Id(36458)
+	@Id(36459)
+	@Id(36460)
+	@Id(36461)
+	@Id(36462)
+	@Id(36463)
+	@Id(36464)
+	@Id(36482)
+	@Id(36483)
+	@Id(36484)
+	@Id(36485)
+	@Id(36486)
+	@Id(36487)
+	@Id(36488)
+	@Id(36506)
+	@Id(36507)
+	@Id(36508)
+	@Id(36509)
+	@Id(36510)
+	@Id(36511)
+	@Id(36512)
+	@Id(80066)
+	@Id(80067)
+	@Id(80068)
+	@Id(80069)
+	@Id(80070)
+	@Id(80071)
+	@Id(80072)
+	@Id(80073)
+	@Id(80074)
+	@Id(80075)
+	@Id(80076)
+	@Id(80077)
+	@Id(80078)
+	@Id(80079)
+	@Id(80080)
+	@Id(80081)
+	@Id(80082)
+	@Id(80083)
+	@Id(80084)
+	@Id(80085)
+	@Id(80086)
+	@Id(80087)
+	@Id(80088)
+	@Id(80089)
+	@Id(80315)
+	@Id(80316)
+	@Id(80317)
+	@Id(80318)
+	public void onPlayerItemUnequip(OnPlayerItemUnequip event)
+	{
+		final PlayerInstance player = event.getPlayer();
+		if (player != null)
+		{
+			player.setDragonWeaponEquipped(false);
+		}
+	}
+	
+	public static void main(String[] args)
+	{
+		new DragonWeaponListeners();
+	}
+}
diff --git a/L2J_Mobius_5.0_Salvation/dist/game/data/scripts/handlers/EffectMasterHandler.java b/L2J_Mobius_5.0_Salvation/dist/game/data/scripts/handlers/EffectMasterHandler.java
index eb02052546..80e8354efc 100644
--- a/L2J_Mobius_5.0_Salvation/dist/game/data/scripts/handlers/EffectMasterHandler.java
+++ b/L2J_Mobius_5.0_Salvation/dist/game/data/scripts/handlers/EffectMasterHandler.java
@@ -137,6 +137,7 @@ public class EffectMasterHandler
 		EffectHandler.getInstance().registerHandler("DispelBySlotProbability", DispelBySlotProbability::new);
 		EffectHandler.getInstance().registerHandler("DispelCaster", DispelCaster::new);
 		EffectHandler.getInstance().registerHandler("DoubleCast", DoubleCast::new);
+		EffectHandler.getInstance().registerHandler("DragonWeaponDefence", DragonWeaponDefence::new);
 		EffectHandler.getInstance().registerHandler("DuelistFury", DuelistFury::new);
 		EffectHandler.getInstance().registerHandler("EnableCloak", EnableCloak::new);
 		EffectHandler.getInstance().registerHandler("EnergyAttack", EnergyAttack::new);
diff --git a/L2J_Mobius_5.0_Salvation/dist/game/data/scripts/handlers/effecthandlers/DragonWeaponDefence.java b/L2J_Mobius_5.0_Salvation/dist/game/data/scripts/handlers/effecthandlers/DragonWeaponDefence.java
new file mode 100644
index 0000000000..476fb537ad
--- /dev/null
+++ b/L2J_Mobius_5.0_Salvation/dist/game/data/scripts/handlers/effecthandlers/DragonWeaponDefence.java
@@ -0,0 +1,31 @@
+/*
+ * This file is part of the L2J Mobius project.
+ * 
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ * 
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+package handlers.effecthandlers;
+
+import org.l2jmobius.gameserver.model.StatSet;
+import org.l2jmobius.gameserver.model.stats.Stat;
+
+/**
+ * @author Mobius
+ */
+public class DragonWeaponDefence extends AbstractStatPercentEffect
+{
+	public DragonWeaponDefence(StatSet params)
+	{
+		super(params, Stat.DRAGON_WEAPON_DEFENCE);
+	}
+}
diff --git a/L2J_Mobius_5.0_Salvation/dist/game/data/stats/skills/documentation.txt b/L2J_Mobius_5.0_Salvation/dist/game/data/stats/skills/documentation.txt
index cca765ceaf..58c9171ba3 100644
--- a/L2J_Mobius_5.0_Salvation/dist/game/data/stats/skills/documentation.txt
+++ b/L2J_Mobius_5.0_Salvation/dist/game/data/stats/skills/documentation.txt
@@ -107,6 +107,7 @@ DispelBySlotMyself: Removes given amount of effects by specified AbnormalType
 DispelBySlotProbability: Removes given amount of effects by specified AbnormalType at a given rate.
 DispelCaster: Removes given amount of effects from caster by specified AbnormalType. (l2jmobius)
 DoubleCast: Triggers Fire, Water, Wind, Earth stance and enables the ability to cast two skills at once.
+DragonWeaponDefence: Dragon weapon defence stat. (l2jmobius)
 DuelistFury: Synergy effect for Faceoff effect. (l2jmobius)
 EnableCloak: See/unsee cloaks.
 EnemyCharge: Charges towards the enemy. Rush Impact.
diff --git a/L2J_Mobius_5.0_Salvation/java/org/l2jmobius/gameserver/model/actor/instance/PlayerInstance.java b/L2J_Mobius_5.0_Salvation/java/org/l2jmobius/gameserver/model/actor/instance/PlayerInstance.java
index 3132a58d4e..a7065c9ea9 100644
--- a/L2J_Mobius_5.0_Salvation/java/org/l2jmobius/gameserver/model/actor/instance/PlayerInstance.java
+++ b/L2J_Mobius_5.0_Salvation/java/org/l2jmobius/gameserver/model/actor/instance/PlayerInstance.java
@@ -753,6 +753,8 @@ public class PlayerInstance extends Playable
 	private int _cursedWeaponEquippedId = 0;
 	private boolean _combatFlagEquippedId = false;
 	
+	private boolean _isDragonWeaponEquipped = false;
+	
 	private boolean _canRevive = true;
 	private int _reviveRequested = 0;
 	private double _revivePower = 0;
@@ -11355,6 +11357,16 @@ public class PlayerInstance extends Playable
 		return _cursedWeaponEquippedId;
 	}
 	
+	public void setDragonWeaponEquipped(boolean value)
+	{
+		_isDragonWeaponEquipped = value;
+	}
+	
+	public boolean isDragonWeaponEquipped()
+	{
+		return _isDragonWeaponEquipped;
+	}
+	
 	public boolean isCombatFlagEquipped()
 	{
 		return _combatFlagEquippedId;
diff --git a/L2J_Mobius_5.0_Salvation/java/org/l2jmobius/gameserver/model/stats/Formulas.java b/L2J_Mobius_5.0_Salvation/java/org/l2jmobius/gameserver/model/stats/Formulas.java
index 07500a7bfc..4ba05aa2a2 100644
--- a/L2J_Mobius_5.0_Salvation/java/org/l2jmobius/gameserver/model/stats/Formulas.java
+++ b/L2J_Mobius_5.0_Salvation/java/org/l2jmobius/gameserver/model/stats/Formulas.java
@@ -1604,7 +1604,18 @@ public class Formulas
 				pvpDefense = target.getStat().getValue(Stat.PVP_PHYSICAL_ATTACK_DEFENCE, 1) * Config.PVP_PHYSICAL_ATTACK_DEFENCE_MULTIPLIERS[targetPlayer.getClassId().getId()];
 			}
 			
-			return Math.max(0.05, 1 + (pvpAttack - pvpDefense)); // Bonus should not be negative.
+			// Dragon weapon defence stat.
+			final double dragonDefense;
+			if (attackerPlayer.isDragonWeaponEquipped())
+			{
+				dragonDefense = target.getStat().getValue(Stat.DRAGON_WEAPON_DEFENCE, 1);
+			}
+			else
+			{
+				dragonDefense = 1;
+			}
+			
+			return Math.max(0.05, dragonDefense * (1 + (pvpAttack - pvpDefense))); // Bonus should not be negative.
 		}
 		
 		// PvE Bonus
diff --git a/L2J_Mobius_5.0_Salvation/java/org/l2jmobius/gameserver/model/stats/Stat.java b/L2J_Mobius_5.0_Salvation/java/org/l2jmobius/gameserver/model/stats/Stat.java
index 83a8726c94..675b6c6011 100644
--- a/L2J_Mobius_5.0_Salvation/java/org/l2jmobius/gameserver/model/stats/Stat.java
+++ b/L2J_Mobius_5.0_Salvation/java/org/l2jmobius/gameserver/model/stats/Stat.java
@@ -87,6 +87,7 @@ public enum Stat
 	CRITICAL_DAMAGE_ADD("cAtkAdd"), // this is another type for special critical damage mods - vicious stance, critical power and critical damage SA
 	HATE_ATTACK("attackHate"),
 	REAR_DAMAGE_RATE("rearDamage"),
+	DRAGON_WEAPON_DEFENCE("dragonWeaponDefence"),
 	
 	// PVP BONUS
 	PVP_PHYSICAL_ATTACK_DAMAGE("pvpPhysDmg"),
diff --git a/L2J_Mobius_5.5_EtinasFate/dist/game/data/scripts/ai/others/DragonWeaponListeners.java b/L2J_Mobius_5.5_EtinasFate/dist/game/data/scripts/ai/others/DragonWeaponListeners.java
new file mode 100644
index 0000000000..085dcb2ca6
--- /dev/null
+++ b/L2J_Mobius_5.5_EtinasFate/dist/game/data/scripts/ai/others/DragonWeaponListeners.java
@@ -0,0 +1,455 @@
+/*
+ * This file is part of the L2J Mobius project.
+ * 
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ * 
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+package ai.others;
+
+import org.l2jmobius.commons.util.CommonUtil;
+import org.l2jmobius.gameserver.model.actor.instance.PlayerInstance;
+import org.l2jmobius.gameserver.model.events.EventType;
+import org.l2jmobius.gameserver.model.events.ListenerRegisterType;
+import org.l2jmobius.gameserver.model.events.annotations.Id;
+import org.l2jmobius.gameserver.model.events.annotations.RegisterEvent;
+import org.l2jmobius.gameserver.model.events.annotations.RegisterType;
+import org.l2jmobius.gameserver.model.events.impl.creature.player.OnPlayerItemEquip;
+import org.l2jmobius.gameserver.model.events.impl.creature.player.OnPlayerItemUnequip;
+import org.l2jmobius.gameserver.model.events.impl.creature.player.OnPlayerLogin;
+import org.l2jmobius.gameserver.model.items.Weapon;
+
+import ai.AbstractNpcAI;
+
+/**
+ * @author Mobius
+ */
+public class DragonWeaponListeners extends AbstractNpcAI
+{
+	private static final int[] WEAPON_IDS =
+	{
+		36417,
+		36418,
+		36419,
+		36420,
+		36421,
+		36422,
+		36423,
+		36424,
+		36425,
+		36426,
+		36441,
+		36442,
+		36443,
+		36444,
+		36445,
+		36446,
+		36447,
+		36448,
+		36449,
+		36450,
+		36465,
+		36466,
+		36467,
+		36468,
+		36469,
+		36470,
+		36471,
+		36472,
+		36473,
+		36474,
+		36489,
+		36490,
+		36491,
+		36492,
+		36493,
+		36494,
+		36495,
+		36496,
+		36497,
+		36498,
+		36427,
+		36428,
+		36429,
+		36430,
+		36431,
+		36432,
+		36433,
+		36451,
+		36452,
+		36453,
+		36454,
+		36455,
+		36456,
+		36457,
+		36475,
+		36476,
+		36477,
+		36478,
+		36479,
+		36480,
+		36481,
+		36499,
+		36500,
+		36501,
+		36502,
+		36503,
+		36504,
+		36505,
+		36434,
+		36435,
+		36436,
+		36437,
+		36438,
+		36439,
+		36440,
+		36458,
+		36459,
+		36460,
+		36461,
+		36462,
+		36463,
+		36464,
+		36482,
+		36483,
+		36484,
+		36485,
+		36486,
+		36487,
+		36488,
+		36506,
+		36507,
+		36508,
+		36509,
+		36510,
+		36511,
+		36512,
+		80066,
+		80067,
+		80068,
+		80069,
+		80070,
+		80071,
+		80072,
+		80073,
+		80074,
+		80075,
+		80076,
+		80077,
+		80078,
+		80079,
+		80080,
+		80081,
+		80082,
+		80083,
+		80084,
+		80085,
+		80086,
+		80087,
+		80088,
+		80089,
+		80315,
+		80316,
+		80317,
+		80318,
+	};
+	
+	@RegisterEvent(EventType.ON_PLAYER_LOGIN)
+	@RegisterType(ListenerRegisterType.GLOBAL_PLAYERS)
+	public void onPlayerLogin(OnPlayerLogin event)
+	{
+		final PlayerInstance player = event.getPlayer();
+		if (player != null)
+		{
+			final Weapon weapon = player.getActiveWeaponItem();
+			if ((weapon != null) && CommonUtil.contains(WEAPON_IDS, weapon.getId()))
+			{
+				player.setDragonWeaponEquipped(true);
+			}
+		}
+	}
+	
+	@RegisterEvent(EventType.ON_PLAYER_ITEM_EQUIP)
+	@RegisterType(ListenerRegisterType.ITEM)
+	@Id(36417)
+	@Id(36418)
+	@Id(36419)
+	@Id(36420)
+	@Id(36421)
+	@Id(36422)
+	@Id(36423)
+	@Id(36424)
+	@Id(36425)
+	@Id(36426)
+	@Id(36441)
+	@Id(36442)
+	@Id(36443)
+	@Id(36444)
+	@Id(36445)
+	@Id(36446)
+	@Id(36447)
+	@Id(36448)
+	@Id(36449)
+	@Id(36450)
+	@Id(36465)
+	@Id(36466)
+	@Id(36467)
+	@Id(36468)
+	@Id(36469)
+	@Id(36470)
+	@Id(36471)
+	@Id(36472)
+	@Id(36473)
+	@Id(36474)
+	@Id(36489)
+	@Id(36490)
+	@Id(36491)
+	@Id(36492)
+	@Id(36493)
+	@Id(36494)
+	@Id(36495)
+	@Id(36496)
+	@Id(36497)
+	@Id(36498)
+	@Id(36427)
+	@Id(36428)
+	@Id(36429)
+	@Id(36430)
+	@Id(36431)
+	@Id(36432)
+	@Id(36433)
+	@Id(36451)
+	@Id(36452)
+	@Id(36453)
+	@Id(36454)
+	@Id(36455)
+	@Id(36456)
+	@Id(36457)
+	@Id(36475)
+	@Id(36476)
+	@Id(36477)
+	@Id(36478)
+	@Id(36479)
+	@Id(36480)
+	@Id(36481)
+	@Id(36499)
+	@Id(36500)
+	@Id(36501)
+	@Id(36502)
+	@Id(36503)
+	@Id(36504)
+	@Id(36505)
+	@Id(36434)
+	@Id(36435)
+	@Id(36436)
+	@Id(36437)
+	@Id(36438)
+	@Id(36439)
+	@Id(36440)
+	@Id(36458)
+	@Id(36459)
+	@Id(36460)
+	@Id(36461)
+	@Id(36462)
+	@Id(36463)
+	@Id(36464)
+	@Id(36482)
+	@Id(36483)
+	@Id(36484)
+	@Id(36485)
+	@Id(36486)
+	@Id(36487)
+	@Id(36488)
+	@Id(36506)
+	@Id(36507)
+	@Id(36508)
+	@Id(36509)
+	@Id(36510)
+	@Id(36511)
+	@Id(36512)
+	@Id(80066)
+	@Id(80067)
+	@Id(80068)
+	@Id(80069)
+	@Id(80070)
+	@Id(80071)
+	@Id(80072)
+	@Id(80073)
+	@Id(80074)
+	@Id(80075)
+	@Id(80076)
+	@Id(80077)
+	@Id(80078)
+	@Id(80079)
+	@Id(80080)
+	@Id(80081)
+	@Id(80082)
+	@Id(80083)
+	@Id(80084)
+	@Id(80085)
+	@Id(80086)
+	@Id(80087)
+	@Id(80088)
+	@Id(80089)
+	@Id(80315)
+	@Id(80316)
+	@Id(80317)
+	@Id(80318)
+	public void onPlayerItemEquip(OnPlayerItemEquip event)
+	{
+		final PlayerInstance player = event.getPlayer();
+		if (player != null)
+		{
+			player.setDragonWeaponEquipped(true);
+		}
+	}
+	
+	@RegisterEvent(EventType.ON_PLAYER_ITEM_UNEQUIP)
+	@RegisterType(ListenerRegisterType.ITEM)
+	@Id(36417)
+	@Id(36418)
+	@Id(36419)
+	@Id(36420)
+	@Id(36421)
+	@Id(36422)
+	@Id(36423)
+	@Id(36424)
+	@Id(36425)
+	@Id(36426)
+	@Id(36441)
+	@Id(36442)
+	@Id(36443)
+	@Id(36444)
+	@Id(36445)
+	@Id(36446)
+	@Id(36447)
+	@Id(36448)
+	@Id(36449)
+	@Id(36450)
+	@Id(36465)
+	@Id(36466)
+	@Id(36467)
+	@Id(36468)
+	@Id(36469)
+	@Id(36470)
+	@Id(36471)
+	@Id(36472)
+	@Id(36473)
+	@Id(36474)
+	@Id(36489)
+	@Id(36490)
+	@Id(36491)
+	@Id(36492)
+	@Id(36493)
+	@Id(36494)
+	@Id(36495)
+	@Id(36496)
+	@Id(36497)
+	@Id(36498)
+	@Id(36427)
+	@Id(36428)
+	@Id(36429)
+	@Id(36430)
+	@Id(36431)
+	@Id(36432)
+	@Id(36433)
+	@Id(36451)
+	@Id(36452)
+	@Id(36453)
+	@Id(36454)
+	@Id(36455)
+	@Id(36456)
+	@Id(36457)
+	@Id(36475)
+	@Id(36476)
+	@Id(36477)
+	@Id(36478)
+	@Id(36479)
+	@Id(36480)
+	@Id(36481)
+	@Id(36499)
+	@Id(36500)
+	@Id(36501)
+	@Id(36502)
+	@Id(36503)
+	@Id(36504)
+	@Id(36505)
+	@Id(36434)
+	@Id(36435)
+	@Id(36436)
+	@Id(36437)
+	@Id(36438)
+	@Id(36439)
+	@Id(36440)
+	@Id(36458)
+	@Id(36459)
+	@Id(36460)
+	@Id(36461)
+	@Id(36462)
+	@Id(36463)
+	@Id(36464)
+	@Id(36482)
+	@Id(36483)
+	@Id(36484)
+	@Id(36485)
+	@Id(36486)
+	@Id(36487)
+	@Id(36488)
+	@Id(36506)
+	@Id(36507)
+	@Id(36508)
+	@Id(36509)
+	@Id(36510)
+	@Id(36511)
+	@Id(36512)
+	@Id(80066)
+	@Id(80067)
+	@Id(80068)
+	@Id(80069)
+	@Id(80070)
+	@Id(80071)
+	@Id(80072)
+	@Id(80073)
+	@Id(80074)
+	@Id(80075)
+	@Id(80076)
+	@Id(80077)
+	@Id(80078)
+	@Id(80079)
+	@Id(80080)
+	@Id(80081)
+	@Id(80082)
+	@Id(80083)
+	@Id(80084)
+	@Id(80085)
+	@Id(80086)
+	@Id(80087)
+	@Id(80088)
+	@Id(80089)
+	@Id(80315)
+	@Id(80316)
+	@Id(80317)
+	@Id(80318)
+	public void onPlayerItemUnequip(OnPlayerItemUnequip event)
+	{
+		final PlayerInstance player = event.getPlayer();
+		if (player != null)
+		{
+			player.setDragonWeaponEquipped(false);
+		}
+	}
+	
+	public static void main(String[] args)
+	{
+		new DragonWeaponListeners();
+	}
+}
diff --git a/L2J_Mobius_5.5_EtinasFate/dist/game/data/scripts/handlers/EffectMasterHandler.java b/L2J_Mobius_5.5_EtinasFate/dist/game/data/scripts/handlers/EffectMasterHandler.java
index 61e5571e47..d99c1a6194 100644
--- a/L2J_Mobius_5.5_EtinasFate/dist/game/data/scripts/handlers/EffectMasterHandler.java
+++ b/L2J_Mobius_5.5_EtinasFate/dist/game/data/scripts/handlers/EffectMasterHandler.java
@@ -138,6 +138,7 @@ public class EffectMasterHandler
 		EffectHandler.getInstance().registerHandler("DispelBySlotProbability", DispelBySlotProbability::new);
 		EffectHandler.getInstance().registerHandler("DispelCaster", DispelCaster::new);
 		EffectHandler.getInstance().registerHandler("DoubleCast", DoubleCast::new);
+		EffectHandler.getInstance().registerHandler("DragonWeaponDefence", DragonWeaponDefence::new);
 		EffectHandler.getInstance().registerHandler("DuelistFury", DuelistFury::new);
 		EffectHandler.getInstance().registerHandler("EnableCloak", EnableCloak::new);
 		EffectHandler.getInstance().registerHandler("EnergyAttack", EnergyAttack::new);
diff --git a/L2J_Mobius_5.5_EtinasFate/dist/game/data/scripts/handlers/effecthandlers/DragonWeaponDefence.java b/L2J_Mobius_5.5_EtinasFate/dist/game/data/scripts/handlers/effecthandlers/DragonWeaponDefence.java
new file mode 100644
index 0000000000..476fb537ad
--- /dev/null
+++ b/L2J_Mobius_5.5_EtinasFate/dist/game/data/scripts/handlers/effecthandlers/DragonWeaponDefence.java
@@ -0,0 +1,31 @@
+/*
+ * This file is part of the L2J Mobius project.
+ * 
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ * 
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+package handlers.effecthandlers;
+
+import org.l2jmobius.gameserver.model.StatSet;
+import org.l2jmobius.gameserver.model.stats.Stat;
+
+/**
+ * @author Mobius
+ */
+public class DragonWeaponDefence extends AbstractStatPercentEffect
+{
+	public DragonWeaponDefence(StatSet params)
+	{
+		super(params, Stat.DRAGON_WEAPON_DEFENCE);
+	}
+}
diff --git a/L2J_Mobius_5.5_EtinasFate/dist/game/data/stats/skills/documentation.txt b/L2J_Mobius_5.5_EtinasFate/dist/game/data/stats/skills/documentation.txt
index 469497a74e..88be31ceb0 100644
--- a/L2J_Mobius_5.5_EtinasFate/dist/game/data/stats/skills/documentation.txt
+++ b/L2J_Mobius_5.5_EtinasFate/dist/game/data/stats/skills/documentation.txt
@@ -108,6 +108,7 @@ DispelBySlotMyself: Removes given amount of effects by specified AbnormalType
 DispelBySlotProbability: Removes given amount of effects by specified AbnormalType at a given rate.
 DispelCaster: Removes given amount of effects from caster by specified AbnormalType. (l2jmobius)
 DoubleCast: Triggers Fire, Water, Wind, Earth stance and enables the ability to cast two skills at once.
+DragonWeaponDefence: Dragon weapon defence stat. (l2jmobius)
 DuelistFury: Synergy effect for Faceoff effect. (l2jmobius)
 EnableCloak: See/unsee cloaks.
 EnemyCharge: Charges towards the enemy. Rush Impact.
diff --git a/L2J_Mobius_5.5_EtinasFate/java/org/l2jmobius/gameserver/model/actor/instance/PlayerInstance.java b/L2J_Mobius_5.5_EtinasFate/java/org/l2jmobius/gameserver/model/actor/instance/PlayerInstance.java
index 8c24e88534..a26ff39303 100644
--- a/L2J_Mobius_5.5_EtinasFate/java/org/l2jmobius/gameserver/model/actor/instance/PlayerInstance.java
+++ b/L2J_Mobius_5.5_EtinasFate/java/org/l2jmobius/gameserver/model/actor/instance/PlayerInstance.java
@@ -753,6 +753,8 @@ public class PlayerInstance extends Playable
 	private int _cursedWeaponEquippedId = 0;
 	private boolean _combatFlagEquippedId = false;
 	
+	private boolean _isDragonWeaponEquipped = false;
+	
 	private boolean _canRevive = true;
 	private int _reviveRequested = 0;
 	private double _revivePower = 0;
@@ -11358,6 +11360,16 @@ public class PlayerInstance extends Playable
 		return _cursedWeaponEquippedId;
 	}
 	
+	public void setDragonWeaponEquipped(boolean value)
+	{
+		_isDragonWeaponEquipped = value;
+	}
+	
+	public boolean isDragonWeaponEquipped()
+	{
+		return _isDragonWeaponEquipped;
+	}
+	
 	public boolean isCombatFlagEquipped()
 	{
 		return _combatFlagEquippedId;
diff --git a/L2J_Mobius_5.5_EtinasFate/java/org/l2jmobius/gameserver/model/stats/Formulas.java b/L2J_Mobius_5.5_EtinasFate/java/org/l2jmobius/gameserver/model/stats/Formulas.java
index 07500a7bfc..4ba05aa2a2 100644
--- a/L2J_Mobius_5.5_EtinasFate/java/org/l2jmobius/gameserver/model/stats/Formulas.java
+++ b/L2J_Mobius_5.5_EtinasFate/java/org/l2jmobius/gameserver/model/stats/Formulas.java
@@ -1604,7 +1604,18 @@ public class Formulas
 				pvpDefense = target.getStat().getValue(Stat.PVP_PHYSICAL_ATTACK_DEFENCE, 1) * Config.PVP_PHYSICAL_ATTACK_DEFENCE_MULTIPLIERS[targetPlayer.getClassId().getId()];
 			}
 			
-			return Math.max(0.05, 1 + (pvpAttack - pvpDefense)); // Bonus should not be negative.
+			// Dragon weapon defence stat.
+			final double dragonDefense;
+			if (attackerPlayer.isDragonWeaponEquipped())
+			{
+				dragonDefense = target.getStat().getValue(Stat.DRAGON_WEAPON_DEFENCE, 1);
+			}
+			else
+			{
+				dragonDefense = 1;
+			}
+			
+			return Math.max(0.05, dragonDefense * (1 + (pvpAttack - pvpDefense))); // Bonus should not be negative.
 		}
 		
 		// PvE Bonus
diff --git a/L2J_Mobius_5.5_EtinasFate/java/org/l2jmobius/gameserver/model/stats/Stat.java b/L2J_Mobius_5.5_EtinasFate/java/org/l2jmobius/gameserver/model/stats/Stat.java
index d17424f182..d8790e3e16 100644
--- a/L2J_Mobius_5.5_EtinasFate/java/org/l2jmobius/gameserver/model/stats/Stat.java
+++ b/L2J_Mobius_5.5_EtinasFate/java/org/l2jmobius/gameserver/model/stats/Stat.java
@@ -87,6 +87,7 @@ public enum Stat
 	CRITICAL_DAMAGE_ADD("cAtkAdd"), // this is another type for special critical damage mods - vicious stance, critical power and critical damage SA
 	HATE_ATTACK("attackHate"),
 	REAR_DAMAGE_RATE("rearDamage"),
+	DRAGON_WEAPON_DEFENCE("dragonWeaponDefence"),
 	
 	// PVP BONUS
 	PVP_PHYSICAL_ATTACK_DAMAGE("pvpPhysDmg"),
diff --git a/L2J_Mobius_6.0_Fafurion/dist/game/data/scripts/ai/others/DragonWeaponListeners.java b/L2J_Mobius_6.0_Fafurion/dist/game/data/scripts/ai/others/DragonWeaponListeners.java
new file mode 100644
index 0000000000..085dcb2ca6
--- /dev/null
+++ b/L2J_Mobius_6.0_Fafurion/dist/game/data/scripts/ai/others/DragonWeaponListeners.java
@@ -0,0 +1,455 @@
+/*
+ * This file is part of the L2J Mobius project.
+ * 
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ * 
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+package ai.others;
+
+import org.l2jmobius.commons.util.CommonUtil;
+import org.l2jmobius.gameserver.model.actor.instance.PlayerInstance;
+import org.l2jmobius.gameserver.model.events.EventType;
+import org.l2jmobius.gameserver.model.events.ListenerRegisterType;
+import org.l2jmobius.gameserver.model.events.annotations.Id;
+import org.l2jmobius.gameserver.model.events.annotations.RegisterEvent;
+import org.l2jmobius.gameserver.model.events.annotations.RegisterType;
+import org.l2jmobius.gameserver.model.events.impl.creature.player.OnPlayerItemEquip;
+import org.l2jmobius.gameserver.model.events.impl.creature.player.OnPlayerItemUnequip;
+import org.l2jmobius.gameserver.model.events.impl.creature.player.OnPlayerLogin;
+import org.l2jmobius.gameserver.model.items.Weapon;
+
+import ai.AbstractNpcAI;
+
+/**
+ * @author Mobius
+ */
+public class DragonWeaponListeners extends AbstractNpcAI
+{
+	private static final int[] WEAPON_IDS =
+	{
+		36417,
+		36418,
+		36419,
+		36420,
+		36421,
+		36422,
+		36423,
+		36424,
+		36425,
+		36426,
+		36441,
+		36442,
+		36443,
+		36444,
+		36445,
+		36446,
+		36447,
+		36448,
+		36449,
+		36450,
+		36465,
+		36466,
+		36467,
+		36468,
+		36469,
+		36470,
+		36471,
+		36472,
+		36473,
+		36474,
+		36489,
+		36490,
+		36491,
+		36492,
+		36493,
+		36494,
+		36495,
+		36496,
+		36497,
+		36498,
+		36427,
+		36428,
+		36429,
+		36430,
+		36431,
+		36432,
+		36433,
+		36451,
+		36452,
+		36453,
+		36454,
+		36455,
+		36456,
+		36457,
+		36475,
+		36476,
+		36477,
+		36478,
+		36479,
+		36480,
+		36481,
+		36499,
+		36500,
+		36501,
+		36502,
+		36503,
+		36504,
+		36505,
+		36434,
+		36435,
+		36436,
+		36437,
+		36438,
+		36439,
+		36440,
+		36458,
+		36459,
+		36460,
+		36461,
+		36462,
+		36463,
+		36464,
+		36482,
+		36483,
+		36484,
+		36485,
+		36486,
+		36487,
+		36488,
+		36506,
+		36507,
+		36508,
+		36509,
+		36510,
+		36511,
+		36512,
+		80066,
+		80067,
+		80068,
+		80069,
+		80070,
+		80071,
+		80072,
+		80073,
+		80074,
+		80075,
+		80076,
+		80077,
+		80078,
+		80079,
+		80080,
+		80081,
+		80082,
+		80083,
+		80084,
+		80085,
+		80086,
+		80087,
+		80088,
+		80089,
+		80315,
+		80316,
+		80317,
+		80318,
+	};
+	
+	@RegisterEvent(EventType.ON_PLAYER_LOGIN)
+	@RegisterType(ListenerRegisterType.GLOBAL_PLAYERS)
+	public void onPlayerLogin(OnPlayerLogin event)
+	{
+		final PlayerInstance player = event.getPlayer();
+		if (player != null)
+		{
+			final Weapon weapon = player.getActiveWeaponItem();
+			if ((weapon != null) && CommonUtil.contains(WEAPON_IDS, weapon.getId()))
+			{
+				player.setDragonWeaponEquipped(true);
+			}
+		}
+	}
+	
+	@RegisterEvent(EventType.ON_PLAYER_ITEM_EQUIP)
+	@RegisterType(ListenerRegisterType.ITEM)
+	@Id(36417)
+	@Id(36418)
+	@Id(36419)
+	@Id(36420)
+	@Id(36421)
+	@Id(36422)
+	@Id(36423)
+	@Id(36424)
+	@Id(36425)
+	@Id(36426)
+	@Id(36441)
+	@Id(36442)
+	@Id(36443)
+	@Id(36444)
+	@Id(36445)
+	@Id(36446)
+	@Id(36447)
+	@Id(36448)
+	@Id(36449)
+	@Id(36450)
+	@Id(36465)
+	@Id(36466)
+	@Id(36467)
+	@Id(36468)
+	@Id(36469)
+	@Id(36470)
+	@Id(36471)
+	@Id(36472)
+	@Id(36473)
+	@Id(36474)
+	@Id(36489)
+	@Id(36490)
+	@Id(36491)
+	@Id(36492)
+	@Id(36493)
+	@Id(36494)
+	@Id(36495)
+	@Id(36496)
+	@Id(36497)
+	@Id(36498)
+	@Id(36427)
+	@Id(36428)
+	@Id(36429)
+	@Id(36430)
+	@Id(36431)
+	@Id(36432)
+	@Id(36433)
+	@Id(36451)
+	@Id(36452)
+	@Id(36453)
+	@Id(36454)
+	@Id(36455)
+	@Id(36456)
+	@Id(36457)
+	@Id(36475)
+	@Id(36476)
+	@Id(36477)
+	@Id(36478)
+	@Id(36479)
+	@Id(36480)
+	@Id(36481)
+	@Id(36499)
+	@Id(36500)
+	@Id(36501)
+	@Id(36502)
+	@Id(36503)
+	@Id(36504)
+	@Id(36505)
+	@Id(36434)
+	@Id(36435)
+	@Id(36436)
+	@Id(36437)
+	@Id(36438)
+	@Id(36439)
+	@Id(36440)
+	@Id(36458)
+	@Id(36459)
+	@Id(36460)
+	@Id(36461)
+	@Id(36462)
+	@Id(36463)
+	@Id(36464)
+	@Id(36482)
+	@Id(36483)
+	@Id(36484)
+	@Id(36485)
+	@Id(36486)
+	@Id(36487)
+	@Id(36488)
+	@Id(36506)
+	@Id(36507)
+	@Id(36508)
+	@Id(36509)
+	@Id(36510)
+	@Id(36511)
+	@Id(36512)
+	@Id(80066)
+	@Id(80067)
+	@Id(80068)
+	@Id(80069)
+	@Id(80070)
+	@Id(80071)
+	@Id(80072)
+	@Id(80073)
+	@Id(80074)
+	@Id(80075)
+	@Id(80076)
+	@Id(80077)
+	@Id(80078)
+	@Id(80079)
+	@Id(80080)
+	@Id(80081)
+	@Id(80082)
+	@Id(80083)
+	@Id(80084)
+	@Id(80085)
+	@Id(80086)
+	@Id(80087)
+	@Id(80088)
+	@Id(80089)
+	@Id(80315)
+	@Id(80316)
+	@Id(80317)
+	@Id(80318)
+	public void onPlayerItemEquip(OnPlayerItemEquip event)
+	{
+		final PlayerInstance player = event.getPlayer();
+		if (player != null)
+		{
+			player.setDragonWeaponEquipped(true);
+		}
+	}
+	
+	@RegisterEvent(EventType.ON_PLAYER_ITEM_UNEQUIP)
+	@RegisterType(ListenerRegisterType.ITEM)
+	@Id(36417)
+	@Id(36418)
+	@Id(36419)
+	@Id(36420)
+	@Id(36421)
+	@Id(36422)
+	@Id(36423)
+	@Id(36424)
+	@Id(36425)
+	@Id(36426)
+	@Id(36441)
+	@Id(36442)
+	@Id(36443)
+	@Id(36444)
+	@Id(36445)
+	@Id(36446)
+	@Id(36447)
+	@Id(36448)
+	@Id(36449)
+	@Id(36450)
+	@Id(36465)
+	@Id(36466)
+	@Id(36467)
+	@Id(36468)
+	@Id(36469)
+	@Id(36470)
+	@Id(36471)
+	@Id(36472)
+	@Id(36473)
+	@Id(36474)
+	@Id(36489)
+	@Id(36490)
+	@Id(36491)
+	@Id(36492)
+	@Id(36493)
+	@Id(36494)
+	@Id(36495)
+	@Id(36496)
+	@Id(36497)
+	@Id(36498)
+	@Id(36427)
+	@Id(36428)
+	@Id(36429)
+	@Id(36430)
+	@Id(36431)
+	@Id(36432)
+	@Id(36433)
+	@Id(36451)
+	@Id(36452)
+	@Id(36453)
+	@Id(36454)
+	@Id(36455)
+	@Id(36456)
+	@Id(36457)
+	@Id(36475)
+	@Id(36476)
+	@Id(36477)
+	@Id(36478)
+	@Id(36479)
+	@Id(36480)
+	@Id(36481)
+	@Id(36499)
+	@Id(36500)
+	@Id(36501)
+	@Id(36502)
+	@Id(36503)
+	@Id(36504)
+	@Id(36505)
+	@Id(36434)
+	@Id(36435)
+	@Id(36436)
+	@Id(36437)
+	@Id(36438)
+	@Id(36439)
+	@Id(36440)
+	@Id(36458)
+	@Id(36459)
+	@Id(36460)
+	@Id(36461)
+	@Id(36462)
+	@Id(36463)
+	@Id(36464)
+	@Id(36482)
+	@Id(36483)
+	@Id(36484)
+	@Id(36485)
+	@Id(36486)
+	@Id(36487)
+	@Id(36488)
+	@Id(36506)
+	@Id(36507)
+	@Id(36508)
+	@Id(36509)
+	@Id(36510)
+	@Id(36511)
+	@Id(36512)
+	@Id(80066)
+	@Id(80067)
+	@Id(80068)
+	@Id(80069)
+	@Id(80070)
+	@Id(80071)
+	@Id(80072)
+	@Id(80073)
+	@Id(80074)
+	@Id(80075)
+	@Id(80076)
+	@Id(80077)
+	@Id(80078)
+	@Id(80079)
+	@Id(80080)
+	@Id(80081)
+	@Id(80082)
+	@Id(80083)
+	@Id(80084)
+	@Id(80085)
+	@Id(80086)
+	@Id(80087)
+	@Id(80088)
+	@Id(80089)
+	@Id(80315)
+	@Id(80316)
+	@Id(80317)
+	@Id(80318)
+	public void onPlayerItemUnequip(OnPlayerItemUnequip event)
+	{
+		final PlayerInstance player = event.getPlayer();
+		if (player != null)
+		{
+			player.setDragonWeaponEquipped(false);
+		}
+	}
+	
+	public static void main(String[] args)
+	{
+		new DragonWeaponListeners();
+	}
+}
diff --git a/L2J_Mobius_6.0_Fafurion/dist/game/data/scripts/handlers/EffectMasterHandler.java b/L2J_Mobius_6.0_Fafurion/dist/game/data/scripts/handlers/EffectMasterHandler.java
index 61e5571e47..d99c1a6194 100644
--- a/L2J_Mobius_6.0_Fafurion/dist/game/data/scripts/handlers/EffectMasterHandler.java
+++ b/L2J_Mobius_6.0_Fafurion/dist/game/data/scripts/handlers/EffectMasterHandler.java
@@ -138,6 +138,7 @@ public class EffectMasterHandler
 		EffectHandler.getInstance().registerHandler("DispelBySlotProbability", DispelBySlotProbability::new);
 		EffectHandler.getInstance().registerHandler("DispelCaster", DispelCaster::new);
 		EffectHandler.getInstance().registerHandler("DoubleCast", DoubleCast::new);
+		EffectHandler.getInstance().registerHandler("DragonWeaponDefence", DragonWeaponDefence::new);
 		EffectHandler.getInstance().registerHandler("DuelistFury", DuelistFury::new);
 		EffectHandler.getInstance().registerHandler("EnableCloak", EnableCloak::new);
 		EffectHandler.getInstance().registerHandler("EnergyAttack", EnergyAttack::new);
diff --git a/L2J_Mobius_6.0_Fafurion/dist/game/data/scripts/handlers/effecthandlers/DragonWeaponDefence.java b/L2J_Mobius_6.0_Fafurion/dist/game/data/scripts/handlers/effecthandlers/DragonWeaponDefence.java
new file mode 100644
index 0000000000..476fb537ad
--- /dev/null
+++ b/L2J_Mobius_6.0_Fafurion/dist/game/data/scripts/handlers/effecthandlers/DragonWeaponDefence.java
@@ -0,0 +1,31 @@
+/*
+ * This file is part of the L2J Mobius project.
+ * 
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ * 
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+package handlers.effecthandlers;
+
+import org.l2jmobius.gameserver.model.StatSet;
+import org.l2jmobius.gameserver.model.stats.Stat;
+
+/**
+ * @author Mobius
+ */
+public class DragonWeaponDefence extends AbstractStatPercentEffect
+{
+	public DragonWeaponDefence(StatSet params)
+	{
+		super(params, Stat.DRAGON_WEAPON_DEFENCE);
+	}
+}
diff --git a/L2J_Mobius_6.0_Fafurion/dist/game/data/stats/skills/documentation.txt b/L2J_Mobius_6.0_Fafurion/dist/game/data/stats/skills/documentation.txt
index 469497a74e..88be31ceb0 100644
--- a/L2J_Mobius_6.0_Fafurion/dist/game/data/stats/skills/documentation.txt
+++ b/L2J_Mobius_6.0_Fafurion/dist/game/data/stats/skills/documentation.txt
@@ -108,6 +108,7 @@ DispelBySlotMyself: Removes given amount of effects by specified AbnormalType
 DispelBySlotProbability: Removes given amount of effects by specified AbnormalType at a given rate.
 DispelCaster: Removes given amount of effects from caster by specified AbnormalType. (l2jmobius)
 DoubleCast: Triggers Fire, Water, Wind, Earth stance and enables the ability to cast two skills at once.
+DragonWeaponDefence: Dragon weapon defence stat. (l2jmobius)
 DuelistFury: Synergy effect for Faceoff effect. (l2jmobius)
 EnableCloak: See/unsee cloaks.
 EnemyCharge: Charges towards the enemy. Rush Impact.
diff --git a/L2J_Mobius_6.0_Fafurion/java/org/l2jmobius/gameserver/model/actor/instance/PlayerInstance.java b/L2J_Mobius_6.0_Fafurion/java/org/l2jmobius/gameserver/model/actor/instance/PlayerInstance.java
index ec659aafa5..77f8273c5e 100644
--- a/L2J_Mobius_6.0_Fafurion/java/org/l2jmobius/gameserver/model/actor/instance/PlayerInstance.java
+++ b/L2J_Mobius_6.0_Fafurion/java/org/l2jmobius/gameserver/model/actor/instance/PlayerInstance.java
@@ -753,6 +753,8 @@ public class PlayerInstance extends Playable
 	private int _cursedWeaponEquippedId = 0;
 	private boolean _combatFlagEquippedId = false;
 	
+	private boolean _isDragonWeaponEquipped = false;
+	
 	private boolean _canRevive = true;
 	private int _reviveRequested = 0;
 	private double _revivePower = 0;
@@ -11364,6 +11366,16 @@ public class PlayerInstance extends Playable
 		return _cursedWeaponEquippedId;
 	}
 	
+	public void setDragonWeaponEquipped(boolean value)
+	{
+		_isDragonWeaponEquipped = value;
+	}
+	
+	public boolean isDragonWeaponEquipped()
+	{
+		return _isDragonWeaponEquipped;
+	}
+	
 	public boolean isCombatFlagEquipped()
 	{
 		return _combatFlagEquippedId;
diff --git a/L2J_Mobius_6.0_Fafurion/java/org/l2jmobius/gameserver/model/stats/Formulas.java b/L2J_Mobius_6.0_Fafurion/java/org/l2jmobius/gameserver/model/stats/Formulas.java
index 07500a7bfc..4ba05aa2a2 100644
--- a/L2J_Mobius_6.0_Fafurion/java/org/l2jmobius/gameserver/model/stats/Formulas.java
+++ b/L2J_Mobius_6.0_Fafurion/java/org/l2jmobius/gameserver/model/stats/Formulas.java
@@ -1604,7 +1604,18 @@ public class Formulas
 				pvpDefense = target.getStat().getValue(Stat.PVP_PHYSICAL_ATTACK_DEFENCE, 1) * Config.PVP_PHYSICAL_ATTACK_DEFENCE_MULTIPLIERS[targetPlayer.getClassId().getId()];
 			}
 			
-			return Math.max(0.05, 1 + (pvpAttack - pvpDefense)); // Bonus should not be negative.
+			// Dragon weapon defence stat.
+			final double dragonDefense;
+			if (attackerPlayer.isDragonWeaponEquipped())
+			{
+				dragonDefense = target.getStat().getValue(Stat.DRAGON_WEAPON_DEFENCE, 1);
+			}
+			else
+			{
+				dragonDefense = 1;
+			}
+			
+			return Math.max(0.05, dragonDefense * (1 + (pvpAttack - pvpDefense))); // Bonus should not be negative.
 		}
 		
 		// PvE Bonus
diff --git a/L2J_Mobius_6.0_Fafurion/java/org/l2jmobius/gameserver/model/stats/Stat.java b/L2J_Mobius_6.0_Fafurion/java/org/l2jmobius/gameserver/model/stats/Stat.java
index d17424f182..d8790e3e16 100644
--- a/L2J_Mobius_6.0_Fafurion/java/org/l2jmobius/gameserver/model/stats/Stat.java
+++ b/L2J_Mobius_6.0_Fafurion/java/org/l2jmobius/gameserver/model/stats/Stat.java
@@ -87,6 +87,7 @@ public enum Stat
 	CRITICAL_DAMAGE_ADD("cAtkAdd"), // this is another type for special critical damage mods - vicious stance, critical power and critical damage SA
 	HATE_ATTACK("attackHate"),
 	REAR_DAMAGE_RATE("rearDamage"),
+	DRAGON_WEAPON_DEFENCE("dragonWeaponDefence"),
 	
 	// PVP BONUS
 	PVP_PHYSICAL_ATTACK_DAMAGE("pvpPhysDmg"),
diff --git a/L2J_Mobius_7.0_PreludeOfWar/dist/game/data/scripts/ai/others/DragonWeaponListeners.java b/L2J_Mobius_7.0_PreludeOfWar/dist/game/data/scripts/ai/others/DragonWeaponListeners.java
new file mode 100644
index 0000000000..085dcb2ca6
--- /dev/null
+++ b/L2J_Mobius_7.0_PreludeOfWar/dist/game/data/scripts/ai/others/DragonWeaponListeners.java
@@ -0,0 +1,455 @@
+/*
+ * This file is part of the L2J Mobius project.
+ * 
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ * 
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+package ai.others;
+
+import org.l2jmobius.commons.util.CommonUtil;
+import org.l2jmobius.gameserver.model.actor.instance.PlayerInstance;
+import org.l2jmobius.gameserver.model.events.EventType;
+import org.l2jmobius.gameserver.model.events.ListenerRegisterType;
+import org.l2jmobius.gameserver.model.events.annotations.Id;
+import org.l2jmobius.gameserver.model.events.annotations.RegisterEvent;
+import org.l2jmobius.gameserver.model.events.annotations.RegisterType;
+import org.l2jmobius.gameserver.model.events.impl.creature.player.OnPlayerItemEquip;
+import org.l2jmobius.gameserver.model.events.impl.creature.player.OnPlayerItemUnequip;
+import org.l2jmobius.gameserver.model.events.impl.creature.player.OnPlayerLogin;
+import org.l2jmobius.gameserver.model.items.Weapon;
+
+import ai.AbstractNpcAI;
+
+/**
+ * @author Mobius
+ */
+public class DragonWeaponListeners extends AbstractNpcAI
+{
+	private static final int[] WEAPON_IDS =
+	{
+		36417,
+		36418,
+		36419,
+		36420,
+		36421,
+		36422,
+		36423,
+		36424,
+		36425,
+		36426,
+		36441,
+		36442,
+		36443,
+		36444,
+		36445,
+		36446,
+		36447,
+		36448,
+		36449,
+		36450,
+		36465,
+		36466,
+		36467,
+		36468,
+		36469,
+		36470,
+		36471,
+		36472,
+		36473,
+		36474,
+		36489,
+		36490,
+		36491,
+		36492,
+		36493,
+		36494,
+		36495,
+		36496,
+		36497,
+		36498,
+		36427,
+		36428,
+		36429,
+		36430,
+		36431,
+		36432,
+		36433,
+		36451,
+		36452,
+		36453,
+		36454,
+		36455,
+		36456,
+		36457,
+		36475,
+		36476,
+		36477,
+		36478,
+		36479,
+		36480,
+		36481,
+		36499,
+		36500,
+		36501,
+		36502,
+		36503,
+		36504,
+		36505,
+		36434,
+		36435,
+		36436,
+		36437,
+		36438,
+		36439,
+		36440,
+		36458,
+		36459,
+		36460,
+		36461,
+		36462,
+		36463,
+		36464,
+		36482,
+		36483,
+		36484,
+		36485,
+		36486,
+		36487,
+		36488,
+		36506,
+		36507,
+		36508,
+		36509,
+		36510,
+		36511,
+		36512,
+		80066,
+		80067,
+		80068,
+		80069,
+		80070,
+		80071,
+		80072,
+		80073,
+		80074,
+		80075,
+		80076,
+		80077,
+		80078,
+		80079,
+		80080,
+		80081,
+		80082,
+		80083,
+		80084,
+		80085,
+		80086,
+		80087,
+		80088,
+		80089,
+		80315,
+		80316,
+		80317,
+		80318,
+	};
+	
+	@RegisterEvent(EventType.ON_PLAYER_LOGIN)
+	@RegisterType(ListenerRegisterType.GLOBAL_PLAYERS)
+	public void onPlayerLogin(OnPlayerLogin event)
+	{
+		final PlayerInstance player = event.getPlayer();
+		if (player != null)
+		{
+			final Weapon weapon = player.getActiveWeaponItem();
+			if ((weapon != null) && CommonUtil.contains(WEAPON_IDS, weapon.getId()))
+			{
+				player.setDragonWeaponEquipped(true);
+			}
+		}
+	}
+	
+	@RegisterEvent(EventType.ON_PLAYER_ITEM_EQUIP)
+	@RegisterType(ListenerRegisterType.ITEM)
+	@Id(36417)
+	@Id(36418)
+	@Id(36419)
+	@Id(36420)
+	@Id(36421)
+	@Id(36422)
+	@Id(36423)
+	@Id(36424)
+	@Id(36425)
+	@Id(36426)
+	@Id(36441)
+	@Id(36442)
+	@Id(36443)
+	@Id(36444)
+	@Id(36445)
+	@Id(36446)
+	@Id(36447)
+	@Id(36448)
+	@Id(36449)
+	@Id(36450)
+	@Id(36465)
+	@Id(36466)
+	@Id(36467)
+	@Id(36468)
+	@Id(36469)
+	@Id(36470)
+	@Id(36471)
+	@Id(36472)
+	@Id(36473)
+	@Id(36474)
+	@Id(36489)
+	@Id(36490)
+	@Id(36491)
+	@Id(36492)
+	@Id(36493)
+	@Id(36494)
+	@Id(36495)
+	@Id(36496)
+	@Id(36497)
+	@Id(36498)
+	@Id(36427)
+	@Id(36428)
+	@Id(36429)
+	@Id(36430)
+	@Id(36431)
+	@Id(36432)
+	@Id(36433)
+	@Id(36451)
+	@Id(36452)
+	@Id(36453)
+	@Id(36454)
+	@Id(36455)
+	@Id(36456)
+	@Id(36457)
+	@Id(36475)
+	@Id(36476)
+	@Id(36477)
+	@Id(36478)
+	@Id(36479)
+	@Id(36480)
+	@Id(36481)
+	@Id(36499)
+	@Id(36500)
+	@Id(36501)
+	@Id(36502)
+	@Id(36503)
+	@Id(36504)
+	@Id(36505)
+	@Id(36434)
+	@Id(36435)
+	@Id(36436)
+	@Id(36437)
+	@Id(36438)
+	@Id(36439)
+	@Id(36440)
+	@Id(36458)
+	@Id(36459)
+	@Id(36460)
+	@Id(36461)
+	@Id(36462)
+	@Id(36463)
+	@Id(36464)
+	@Id(36482)
+	@Id(36483)
+	@Id(36484)
+	@Id(36485)
+	@Id(36486)
+	@Id(36487)
+	@Id(36488)
+	@Id(36506)
+	@Id(36507)
+	@Id(36508)
+	@Id(36509)
+	@Id(36510)
+	@Id(36511)
+	@Id(36512)
+	@Id(80066)
+	@Id(80067)
+	@Id(80068)
+	@Id(80069)
+	@Id(80070)
+	@Id(80071)
+	@Id(80072)
+	@Id(80073)
+	@Id(80074)
+	@Id(80075)
+	@Id(80076)
+	@Id(80077)
+	@Id(80078)
+	@Id(80079)
+	@Id(80080)
+	@Id(80081)
+	@Id(80082)
+	@Id(80083)
+	@Id(80084)
+	@Id(80085)
+	@Id(80086)
+	@Id(80087)
+	@Id(80088)
+	@Id(80089)
+	@Id(80315)
+	@Id(80316)
+	@Id(80317)
+	@Id(80318)
+	public void onPlayerItemEquip(OnPlayerItemEquip event)
+	{
+		final PlayerInstance player = event.getPlayer();
+		if (player != null)
+		{
+			player.setDragonWeaponEquipped(true);
+		}
+	}
+	
+	@RegisterEvent(EventType.ON_PLAYER_ITEM_UNEQUIP)
+	@RegisterType(ListenerRegisterType.ITEM)
+	@Id(36417)
+	@Id(36418)
+	@Id(36419)
+	@Id(36420)
+	@Id(36421)
+	@Id(36422)
+	@Id(36423)
+	@Id(36424)
+	@Id(36425)
+	@Id(36426)
+	@Id(36441)
+	@Id(36442)
+	@Id(36443)
+	@Id(36444)
+	@Id(36445)
+	@Id(36446)
+	@Id(36447)
+	@Id(36448)
+	@Id(36449)
+	@Id(36450)
+	@Id(36465)
+	@Id(36466)
+	@Id(36467)
+	@Id(36468)
+	@Id(36469)
+	@Id(36470)
+	@Id(36471)
+	@Id(36472)
+	@Id(36473)
+	@Id(36474)
+	@Id(36489)
+	@Id(36490)
+	@Id(36491)
+	@Id(36492)
+	@Id(36493)
+	@Id(36494)
+	@Id(36495)
+	@Id(36496)
+	@Id(36497)
+	@Id(36498)
+	@Id(36427)
+	@Id(36428)
+	@Id(36429)
+	@Id(36430)
+	@Id(36431)
+	@Id(36432)
+	@Id(36433)
+	@Id(36451)
+	@Id(36452)
+	@Id(36453)
+	@Id(36454)
+	@Id(36455)
+	@Id(36456)
+	@Id(36457)
+	@Id(36475)
+	@Id(36476)
+	@Id(36477)
+	@Id(36478)
+	@Id(36479)
+	@Id(36480)
+	@Id(36481)
+	@Id(36499)
+	@Id(36500)
+	@Id(36501)
+	@Id(36502)
+	@Id(36503)
+	@Id(36504)
+	@Id(36505)
+	@Id(36434)
+	@Id(36435)
+	@Id(36436)
+	@Id(36437)
+	@Id(36438)
+	@Id(36439)
+	@Id(36440)
+	@Id(36458)
+	@Id(36459)
+	@Id(36460)
+	@Id(36461)
+	@Id(36462)
+	@Id(36463)
+	@Id(36464)
+	@Id(36482)
+	@Id(36483)
+	@Id(36484)
+	@Id(36485)
+	@Id(36486)
+	@Id(36487)
+	@Id(36488)
+	@Id(36506)
+	@Id(36507)
+	@Id(36508)
+	@Id(36509)
+	@Id(36510)
+	@Id(36511)
+	@Id(36512)
+	@Id(80066)
+	@Id(80067)
+	@Id(80068)
+	@Id(80069)
+	@Id(80070)
+	@Id(80071)
+	@Id(80072)
+	@Id(80073)
+	@Id(80074)
+	@Id(80075)
+	@Id(80076)
+	@Id(80077)
+	@Id(80078)
+	@Id(80079)
+	@Id(80080)
+	@Id(80081)
+	@Id(80082)
+	@Id(80083)
+	@Id(80084)
+	@Id(80085)
+	@Id(80086)
+	@Id(80087)
+	@Id(80088)
+	@Id(80089)
+	@Id(80315)
+	@Id(80316)
+	@Id(80317)
+	@Id(80318)
+	public void onPlayerItemUnequip(OnPlayerItemUnequip event)
+	{
+		final PlayerInstance player = event.getPlayer();
+		if (player != null)
+		{
+			player.setDragonWeaponEquipped(false);
+		}
+	}
+	
+	public static void main(String[] args)
+	{
+		new DragonWeaponListeners();
+	}
+}
diff --git a/L2J_Mobius_7.0_PreludeOfWar/dist/game/data/scripts/handlers/EffectMasterHandler.java b/L2J_Mobius_7.0_PreludeOfWar/dist/game/data/scripts/handlers/EffectMasterHandler.java
index 7ab7e96e2a..8734287606 100644
--- a/L2J_Mobius_7.0_PreludeOfWar/dist/game/data/scripts/handlers/EffectMasterHandler.java
+++ b/L2J_Mobius_7.0_PreludeOfWar/dist/game/data/scripts/handlers/EffectMasterHandler.java
@@ -138,6 +138,7 @@ public class EffectMasterHandler
 		EffectHandler.getInstance().registerHandler("DispelBySlotProbability", DispelBySlotProbability::new);
 		EffectHandler.getInstance().registerHandler("DispelCaster", DispelCaster::new);
 		EffectHandler.getInstance().registerHandler("DoubleCast", DoubleCast::new);
+		EffectHandler.getInstance().registerHandler("DragonWeaponDefence", DragonWeaponDefence::new);
 		EffectHandler.getInstance().registerHandler("DuelistFury", DuelistFury::new);
 		EffectHandler.getInstance().registerHandler("EnableCloak", EnableCloak::new);
 		EffectHandler.getInstance().registerHandler("EnergyAttack", EnergyAttack::new);
diff --git a/L2J_Mobius_7.0_PreludeOfWar/dist/game/data/scripts/handlers/effecthandlers/DragonWeaponDefence.java b/L2J_Mobius_7.0_PreludeOfWar/dist/game/data/scripts/handlers/effecthandlers/DragonWeaponDefence.java
new file mode 100644
index 0000000000..476fb537ad
--- /dev/null
+++ b/L2J_Mobius_7.0_PreludeOfWar/dist/game/data/scripts/handlers/effecthandlers/DragonWeaponDefence.java
@@ -0,0 +1,31 @@
+/*
+ * This file is part of the L2J Mobius project.
+ * 
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ * 
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+package handlers.effecthandlers;
+
+import org.l2jmobius.gameserver.model.StatSet;
+import org.l2jmobius.gameserver.model.stats.Stat;
+
+/**
+ * @author Mobius
+ */
+public class DragonWeaponDefence extends AbstractStatPercentEffect
+{
+	public DragonWeaponDefence(StatSet params)
+	{
+		super(params, Stat.DRAGON_WEAPON_DEFENCE);
+	}
+}
diff --git a/L2J_Mobius_7.0_PreludeOfWar/dist/game/data/stats/skills/documentation.txt b/L2J_Mobius_7.0_PreludeOfWar/dist/game/data/stats/skills/documentation.txt
index 95e8125d48..14133e7c78 100644
--- a/L2J_Mobius_7.0_PreludeOfWar/dist/game/data/stats/skills/documentation.txt
+++ b/L2J_Mobius_7.0_PreludeOfWar/dist/game/data/stats/skills/documentation.txt
@@ -108,6 +108,7 @@ DispelBySlotMyself: Removes given amount of effects by specified AbnormalType
 DispelBySlotProbability: Removes given amount of effects by specified AbnormalType at a given rate.
 DispelCaster: Removes given amount of effects from caster by specified AbnormalType. (l2jmobius)
 DoubleCast: Triggers Fire, Water, Wind, Earth stance and enables the ability to cast two skills at once.
+DragonWeaponDefence: Dragon weapon defence stat. (l2jmobius)
 DuelistFury: Synergy effect for Faceoff effect. (l2jmobius)
 EnableCloak: See/unsee cloaks.
 EnemyCharge: Charges towards the enemy. Rush Impact.
diff --git a/L2J_Mobius_7.0_PreludeOfWar/java/org/l2jmobius/gameserver/model/actor/instance/PlayerInstance.java b/L2J_Mobius_7.0_PreludeOfWar/java/org/l2jmobius/gameserver/model/actor/instance/PlayerInstance.java
index b26dcbfddf..1af41e9d2a 100644
--- a/L2J_Mobius_7.0_PreludeOfWar/java/org/l2jmobius/gameserver/model/actor/instance/PlayerInstance.java
+++ b/L2J_Mobius_7.0_PreludeOfWar/java/org/l2jmobius/gameserver/model/actor/instance/PlayerInstance.java
@@ -760,6 +760,8 @@ public class PlayerInstance extends Playable
 	private int _cursedWeaponEquippedId = 0;
 	private boolean _combatFlagEquippedId = false;
 	
+	private boolean _isDragonWeaponEquipped = false;
+	
 	private boolean _canRevive = true;
 	private int _reviveRequested = 0;
 	private double _revivePower = 0;
@@ -11365,6 +11367,16 @@ public class PlayerInstance extends Playable
 		return _cursedWeaponEquippedId;
 	}
 	
+	public void setDragonWeaponEquipped(boolean value)
+	{
+		_isDragonWeaponEquipped = value;
+	}
+	
+	public boolean isDragonWeaponEquipped()
+	{
+		return _isDragonWeaponEquipped;
+	}
+	
 	public boolean isCombatFlagEquipped()
 	{
 		return _combatFlagEquippedId;
diff --git a/L2J_Mobius_7.0_PreludeOfWar/java/org/l2jmobius/gameserver/model/stats/Formulas.java b/L2J_Mobius_7.0_PreludeOfWar/java/org/l2jmobius/gameserver/model/stats/Formulas.java
index 15cb112641..42484eb483 100644
--- a/L2J_Mobius_7.0_PreludeOfWar/java/org/l2jmobius/gameserver/model/stats/Formulas.java
+++ b/L2J_Mobius_7.0_PreludeOfWar/java/org/l2jmobius/gameserver/model/stats/Formulas.java
@@ -1604,7 +1604,18 @@ public class Formulas
 				pvpDefense = target.getStat().getValue(Stat.PVP_PHYSICAL_ATTACK_DEFENCE, 1) * Config.PVP_PHYSICAL_ATTACK_DEFENCE_MULTIPLIERS[targetPlayer.getClassId().getId()];
 			}
 			
-			return Math.max(0.05, 1 + (pvpAttack - pvpDefense)); // Bonus should not be negative.
+			// Dragon weapon defence stat.
+			final double dragonDefense;
+			if (attackerPlayer.isDragonWeaponEquipped())
+			{
+				dragonDefense = target.getStat().getValue(Stat.DRAGON_WEAPON_DEFENCE, 1);
+			}
+			else
+			{
+				dragonDefense = 1;
+			}
+			
+			return Math.max(0.05, dragonDefense * (1 + (pvpAttack - pvpDefense))); // Bonus should not be negative.
 		}
 		
 		// PvE Bonus
diff --git a/L2J_Mobius_7.0_PreludeOfWar/java/org/l2jmobius/gameserver/model/stats/Stat.java b/L2J_Mobius_7.0_PreludeOfWar/java/org/l2jmobius/gameserver/model/stats/Stat.java
index d17424f182..d8790e3e16 100644
--- a/L2J_Mobius_7.0_PreludeOfWar/java/org/l2jmobius/gameserver/model/stats/Stat.java
+++ b/L2J_Mobius_7.0_PreludeOfWar/java/org/l2jmobius/gameserver/model/stats/Stat.java
@@ -87,6 +87,7 @@ public enum Stat
 	CRITICAL_DAMAGE_ADD("cAtkAdd"), // this is another type for special critical damage mods - vicious stance, critical power and critical damage SA
 	HATE_ATTACK("attackHate"),
 	REAR_DAMAGE_RATE("rearDamage"),
+	DRAGON_WEAPON_DEFENCE("dragonWeaponDefence"),
 	
 	// PVP BONUS
 	PVP_PHYSICAL_ATTACK_DAMAGE("pvpPhysDmg"),
diff --git a/L2J_Mobius_8.0_Homunculus/dist/game/data/scripts/ai/others/DragonWeaponListeners.java b/L2J_Mobius_8.0_Homunculus/dist/game/data/scripts/ai/others/DragonWeaponListeners.java
new file mode 100644
index 0000000000..085dcb2ca6
--- /dev/null
+++ b/L2J_Mobius_8.0_Homunculus/dist/game/data/scripts/ai/others/DragonWeaponListeners.java
@@ -0,0 +1,455 @@
+/*
+ * This file is part of the L2J Mobius project.
+ * 
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ * 
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+package ai.others;
+
+import org.l2jmobius.commons.util.CommonUtil;
+import org.l2jmobius.gameserver.model.actor.instance.PlayerInstance;
+import org.l2jmobius.gameserver.model.events.EventType;
+import org.l2jmobius.gameserver.model.events.ListenerRegisterType;
+import org.l2jmobius.gameserver.model.events.annotations.Id;
+import org.l2jmobius.gameserver.model.events.annotations.RegisterEvent;
+import org.l2jmobius.gameserver.model.events.annotations.RegisterType;
+import org.l2jmobius.gameserver.model.events.impl.creature.player.OnPlayerItemEquip;
+import org.l2jmobius.gameserver.model.events.impl.creature.player.OnPlayerItemUnequip;
+import org.l2jmobius.gameserver.model.events.impl.creature.player.OnPlayerLogin;
+import org.l2jmobius.gameserver.model.items.Weapon;
+
+import ai.AbstractNpcAI;
+
+/**
+ * @author Mobius
+ */
+public class DragonWeaponListeners extends AbstractNpcAI
+{
+	private static final int[] WEAPON_IDS =
+	{
+		36417,
+		36418,
+		36419,
+		36420,
+		36421,
+		36422,
+		36423,
+		36424,
+		36425,
+		36426,
+		36441,
+		36442,
+		36443,
+		36444,
+		36445,
+		36446,
+		36447,
+		36448,
+		36449,
+		36450,
+		36465,
+		36466,
+		36467,
+		36468,
+		36469,
+		36470,
+		36471,
+		36472,
+		36473,
+		36474,
+		36489,
+		36490,
+		36491,
+		36492,
+		36493,
+		36494,
+		36495,
+		36496,
+		36497,
+		36498,
+		36427,
+		36428,
+		36429,
+		36430,
+		36431,
+		36432,
+		36433,
+		36451,
+		36452,
+		36453,
+		36454,
+		36455,
+		36456,
+		36457,
+		36475,
+		36476,
+		36477,
+		36478,
+		36479,
+		36480,
+		36481,
+		36499,
+		36500,
+		36501,
+		36502,
+		36503,
+		36504,
+		36505,
+		36434,
+		36435,
+		36436,
+		36437,
+		36438,
+		36439,
+		36440,
+		36458,
+		36459,
+		36460,
+		36461,
+		36462,
+		36463,
+		36464,
+		36482,
+		36483,
+		36484,
+		36485,
+		36486,
+		36487,
+		36488,
+		36506,
+		36507,
+		36508,
+		36509,
+		36510,
+		36511,
+		36512,
+		80066,
+		80067,
+		80068,
+		80069,
+		80070,
+		80071,
+		80072,
+		80073,
+		80074,
+		80075,
+		80076,
+		80077,
+		80078,
+		80079,
+		80080,
+		80081,
+		80082,
+		80083,
+		80084,
+		80085,
+		80086,
+		80087,
+		80088,
+		80089,
+		80315,
+		80316,
+		80317,
+		80318,
+	};
+	
+	@RegisterEvent(EventType.ON_PLAYER_LOGIN)
+	@RegisterType(ListenerRegisterType.GLOBAL_PLAYERS)
+	public void onPlayerLogin(OnPlayerLogin event)
+	{
+		final PlayerInstance player = event.getPlayer();
+		if (player != null)
+		{
+			final Weapon weapon = player.getActiveWeaponItem();
+			if ((weapon != null) && CommonUtil.contains(WEAPON_IDS, weapon.getId()))
+			{
+				player.setDragonWeaponEquipped(true);
+			}
+		}
+	}
+	
+	@RegisterEvent(EventType.ON_PLAYER_ITEM_EQUIP)
+	@RegisterType(ListenerRegisterType.ITEM)
+	@Id(36417)
+	@Id(36418)
+	@Id(36419)
+	@Id(36420)
+	@Id(36421)
+	@Id(36422)
+	@Id(36423)
+	@Id(36424)
+	@Id(36425)
+	@Id(36426)
+	@Id(36441)
+	@Id(36442)
+	@Id(36443)
+	@Id(36444)
+	@Id(36445)
+	@Id(36446)
+	@Id(36447)
+	@Id(36448)
+	@Id(36449)
+	@Id(36450)
+	@Id(36465)
+	@Id(36466)
+	@Id(36467)
+	@Id(36468)
+	@Id(36469)
+	@Id(36470)
+	@Id(36471)
+	@Id(36472)
+	@Id(36473)
+	@Id(36474)
+	@Id(36489)
+	@Id(36490)
+	@Id(36491)
+	@Id(36492)
+	@Id(36493)
+	@Id(36494)
+	@Id(36495)
+	@Id(36496)
+	@Id(36497)
+	@Id(36498)
+	@Id(36427)
+	@Id(36428)
+	@Id(36429)
+	@Id(36430)
+	@Id(36431)
+	@Id(36432)
+	@Id(36433)
+	@Id(36451)
+	@Id(36452)
+	@Id(36453)
+	@Id(36454)
+	@Id(36455)
+	@Id(36456)
+	@Id(36457)
+	@Id(36475)
+	@Id(36476)
+	@Id(36477)
+	@Id(36478)
+	@Id(36479)
+	@Id(36480)
+	@Id(36481)
+	@Id(36499)
+	@Id(36500)
+	@Id(36501)
+	@Id(36502)
+	@Id(36503)
+	@Id(36504)
+	@Id(36505)
+	@Id(36434)
+	@Id(36435)
+	@Id(36436)
+	@Id(36437)
+	@Id(36438)
+	@Id(36439)
+	@Id(36440)
+	@Id(36458)
+	@Id(36459)
+	@Id(36460)
+	@Id(36461)
+	@Id(36462)
+	@Id(36463)
+	@Id(36464)
+	@Id(36482)
+	@Id(36483)
+	@Id(36484)
+	@Id(36485)
+	@Id(36486)
+	@Id(36487)
+	@Id(36488)
+	@Id(36506)
+	@Id(36507)
+	@Id(36508)
+	@Id(36509)
+	@Id(36510)
+	@Id(36511)
+	@Id(36512)
+	@Id(80066)
+	@Id(80067)
+	@Id(80068)
+	@Id(80069)
+	@Id(80070)
+	@Id(80071)
+	@Id(80072)
+	@Id(80073)
+	@Id(80074)
+	@Id(80075)
+	@Id(80076)
+	@Id(80077)
+	@Id(80078)
+	@Id(80079)
+	@Id(80080)
+	@Id(80081)
+	@Id(80082)
+	@Id(80083)
+	@Id(80084)
+	@Id(80085)
+	@Id(80086)
+	@Id(80087)
+	@Id(80088)
+	@Id(80089)
+	@Id(80315)
+	@Id(80316)
+	@Id(80317)
+	@Id(80318)
+	public void onPlayerItemEquip(OnPlayerItemEquip event)
+	{
+		final PlayerInstance player = event.getPlayer();
+		if (player != null)
+		{
+			player.setDragonWeaponEquipped(true);
+		}
+	}
+	
+	@RegisterEvent(EventType.ON_PLAYER_ITEM_UNEQUIP)
+	@RegisterType(ListenerRegisterType.ITEM)
+	@Id(36417)
+	@Id(36418)
+	@Id(36419)
+	@Id(36420)
+	@Id(36421)
+	@Id(36422)
+	@Id(36423)
+	@Id(36424)
+	@Id(36425)
+	@Id(36426)
+	@Id(36441)
+	@Id(36442)
+	@Id(36443)
+	@Id(36444)
+	@Id(36445)
+	@Id(36446)
+	@Id(36447)
+	@Id(36448)
+	@Id(36449)
+	@Id(36450)
+	@Id(36465)
+	@Id(36466)
+	@Id(36467)
+	@Id(36468)
+	@Id(36469)
+	@Id(36470)
+	@Id(36471)
+	@Id(36472)
+	@Id(36473)
+	@Id(36474)
+	@Id(36489)
+	@Id(36490)
+	@Id(36491)
+	@Id(36492)
+	@Id(36493)
+	@Id(36494)
+	@Id(36495)
+	@Id(36496)
+	@Id(36497)
+	@Id(36498)
+	@Id(36427)
+	@Id(36428)
+	@Id(36429)
+	@Id(36430)
+	@Id(36431)
+	@Id(36432)
+	@Id(36433)
+	@Id(36451)
+	@Id(36452)
+	@Id(36453)
+	@Id(36454)
+	@Id(36455)
+	@Id(36456)
+	@Id(36457)
+	@Id(36475)
+	@Id(36476)
+	@Id(36477)
+	@Id(36478)
+	@Id(36479)
+	@Id(36480)
+	@Id(36481)
+	@Id(36499)
+	@Id(36500)
+	@Id(36501)
+	@Id(36502)
+	@Id(36503)
+	@Id(36504)
+	@Id(36505)
+	@Id(36434)
+	@Id(36435)
+	@Id(36436)
+	@Id(36437)
+	@Id(36438)
+	@Id(36439)
+	@Id(36440)
+	@Id(36458)
+	@Id(36459)
+	@Id(36460)
+	@Id(36461)
+	@Id(36462)
+	@Id(36463)
+	@Id(36464)
+	@Id(36482)
+	@Id(36483)
+	@Id(36484)
+	@Id(36485)
+	@Id(36486)
+	@Id(36487)
+	@Id(36488)
+	@Id(36506)
+	@Id(36507)
+	@Id(36508)
+	@Id(36509)
+	@Id(36510)
+	@Id(36511)
+	@Id(36512)
+	@Id(80066)
+	@Id(80067)
+	@Id(80068)
+	@Id(80069)
+	@Id(80070)
+	@Id(80071)
+	@Id(80072)
+	@Id(80073)
+	@Id(80074)
+	@Id(80075)
+	@Id(80076)
+	@Id(80077)
+	@Id(80078)
+	@Id(80079)
+	@Id(80080)
+	@Id(80081)
+	@Id(80082)
+	@Id(80083)
+	@Id(80084)
+	@Id(80085)
+	@Id(80086)
+	@Id(80087)
+	@Id(80088)
+	@Id(80089)
+	@Id(80315)
+	@Id(80316)
+	@Id(80317)
+	@Id(80318)
+	public void onPlayerItemUnequip(OnPlayerItemUnequip event)
+	{
+		final PlayerInstance player = event.getPlayer();
+		if (player != null)
+		{
+			player.setDragonWeaponEquipped(false);
+		}
+	}
+	
+	public static void main(String[] args)
+	{
+		new DragonWeaponListeners();
+	}
+}
diff --git a/L2J_Mobius_8.0_Homunculus/dist/game/data/scripts/handlers/EffectMasterHandler.java b/L2J_Mobius_8.0_Homunculus/dist/game/data/scripts/handlers/EffectMasterHandler.java
index 7ab7e96e2a..8734287606 100644
--- a/L2J_Mobius_8.0_Homunculus/dist/game/data/scripts/handlers/EffectMasterHandler.java
+++ b/L2J_Mobius_8.0_Homunculus/dist/game/data/scripts/handlers/EffectMasterHandler.java
@@ -138,6 +138,7 @@ public class EffectMasterHandler
 		EffectHandler.getInstance().registerHandler("DispelBySlotProbability", DispelBySlotProbability::new);
 		EffectHandler.getInstance().registerHandler("DispelCaster", DispelCaster::new);
 		EffectHandler.getInstance().registerHandler("DoubleCast", DoubleCast::new);
+		EffectHandler.getInstance().registerHandler("DragonWeaponDefence", DragonWeaponDefence::new);
 		EffectHandler.getInstance().registerHandler("DuelistFury", DuelistFury::new);
 		EffectHandler.getInstance().registerHandler("EnableCloak", EnableCloak::new);
 		EffectHandler.getInstance().registerHandler("EnergyAttack", EnergyAttack::new);
diff --git a/L2J_Mobius_8.0_Homunculus/dist/game/data/scripts/handlers/effecthandlers/DragonWeaponDefence.java b/L2J_Mobius_8.0_Homunculus/dist/game/data/scripts/handlers/effecthandlers/DragonWeaponDefence.java
new file mode 100644
index 0000000000..476fb537ad
--- /dev/null
+++ b/L2J_Mobius_8.0_Homunculus/dist/game/data/scripts/handlers/effecthandlers/DragonWeaponDefence.java
@@ -0,0 +1,31 @@
+/*
+ * This file is part of the L2J Mobius project.
+ * 
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ * 
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+package handlers.effecthandlers;
+
+import org.l2jmobius.gameserver.model.StatSet;
+import org.l2jmobius.gameserver.model.stats.Stat;
+
+/**
+ * @author Mobius
+ */
+public class DragonWeaponDefence extends AbstractStatPercentEffect
+{
+	public DragonWeaponDefence(StatSet params)
+	{
+		super(params, Stat.DRAGON_WEAPON_DEFENCE);
+	}
+}
diff --git a/L2J_Mobius_8.0_Homunculus/dist/game/data/stats/skills/documentation.txt b/L2J_Mobius_8.0_Homunculus/dist/game/data/stats/skills/documentation.txt
index 95e8125d48..14133e7c78 100644
--- a/L2J_Mobius_8.0_Homunculus/dist/game/data/stats/skills/documentation.txt
+++ b/L2J_Mobius_8.0_Homunculus/dist/game/data/stats/skills/documentation.txt
@@ -108,6 +108,7 @@ DispelBySlotMyself: Removes given amount of effects by specified AbnormalType
 DispelBySlotProbability: Removes given amount of effects by specified AbnormalType at a given rate.
 DispelCaster: Removes given amount of effects from caster by specified AbnormalType. (l2jmobius)
 DoubleCast: Triggers Fire, Water, Wind, Earth stance and enables the ability to cast two skills at once.
+DragonWeaponDefence: Dragon weapon defence stat. (l2jmobius)
 DuelistFury: Synergy effect for Faceoff effect. (l2jmobius)
 EnableCloak: See/unsee cloaks.
 EnemyCharge: Charges towards the enemy. Rush Impact.
diff --git a/L2J_Mobius_8.0_Homunculus/java/org/l2jmobius/gameserver/model/actor/instance/PlayerInstance.java b/L2J_Mobius_8.0_Homunculus/java/org/l2jmobius/gameserver/model/actor/instance/PlayerInstance.java
index 475fcd3742..33ef455800 100644
--- a/L2J_Mobius_8.0_Homunculus/java/org/l2jmobius/gameserver/model/actor/instance/PlayerInstance.java
+++ b/L2J_Mobius_8.0_Homunculus/java/org/l2jmobius/gameserver/model/actor/instance/PlayerInstance.java
@@ -754,6 +754,8 @@ public class PlayerInstance extends Playable
 	private int _cursedWeaponEquippedId = 0;
 	private boolean _combatFlagEquippedId = false;
 	
+	private boolean _isDragonWeaponEquipped = false;
+	
 	private boolean _canRevive = true;
 	private int _reviveRequested = 0;
 	private double _revivePower = 0;
@@ -11368,6 +11370,16 @@ public class PlayerInstance extends Playable
 		return _cursedWeaponEquippedId;
 	}
 	
+	public void setDragonWeaponEquipped(boolean value)
+	{
+		_isDragonWeaponEquipped = value;
+	}
+	
+	public boolean isDragonWeaponEquipped()
+	{
+		return _isDragonWeaponEquipped;
+	}
+	
 	public boolean isCombatFlagEquipped()
 	{
 		return _combatFlagEquippedId;
diff --git a/L2J_Mobius_8.0_Homunculus/java/org/l2jmobius/gameserver/model/stats/Formulas.java b/L2J_Mobius_8.0_Homunculus/java/org/l2jmobius/gameserver/model/stats/Formulas.java
index 15cb112641..42484eb483 100644
--- a/L2J_Mobius_8.0_Homunculus/java/org/l2jmobius/gameserver/model/stats/Formulas.java
+++ b/L2J_Mobius_8.0_Homunculus/java/org/l2jmobius/gameserver/model/stats/Formulas.java
@@ -1604,7 +1604,18 @@ public class Formulas
 				pvpDefense = target.getStat().getValue(Stat.PVP_PHYSICAL_ATTACK_DEFENCE, 1) * Config.PVP_PHYSICAL_ATTACK_DEFENCE_MULTIPLIERS[targetPlayer.getClassId().getId()];
 			}
 			
-			return Math.max(0.05, 1 + (pvpAttack - pvpDefense)); // Bonus should not be negative.
+			// Dragon weapon defence stat.
+			final double dragonDefense;
+			if (attackerPlayer.isDragonWeaponEquipped())
+			{
+				dragonDefense = target.getStat().getValue(Stat.DRAGON_WEAPON_DEFENCE, 1);
+			}
+			else
+			{
+				dragonDefense = 1;
+			}
+			
+			return Math.max(0.05, dragonDefense * (1 + (pvpAttack - pvpDefense))); // Bonus should not be negative.
 		}
 		
 		// PvE Bonus
diff --git a/L2J_Mobius_8.0_Homunculus/java/org/l2jmobius/gameserver/model/stats/Stat.java b/L2J_Mobius_8.0_Homunculus/java/org/l2jmobius/gameserver/model/stats/Stat.java
index d17424f182..d8790e3e16 100644
--- a/L2J_Mobius_8.0_Homunculus/java/org/l2jmobius/gameserver/model/stats/Stat.java
+++ b/L2J_Mobius_8.0_Homunculus/java/org/l2jmobius/gameserver/model/stats/Stat.java
@@ -87,6 +87,7 @@ public enum Stat
 	CRITICAL_DAMAGE_ADD("cAtkAdd"), // this is another type for special critical damage mods - vicious stance, critical power and critical damage SA
 	HATE_ATTACK("attackHate"),
 	REAR_DAMAGE_RATE("rearDamage"),
+	DRAGON_WEAPON_DEFENCE("dragonWeaponDefence"),
 	
 	// PVP BONUS
 	PVP_PHYSICAL_ATTACK_DAMAGE("pvpPhysDmg"),