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 eeee25f75d..1aeadb9bef 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
@@ -178,6 +178,8 @@ public class EffectMasterHandler
 		EffectHandler.getInstance().registerHandler("HpRegen", HpRegen::new);
 		EffectHandler.getInstance().registerHandler("HpToOwner", HpToOwner::new);
 		EffectHandler.getInstance().registerHandler("IgnoreDeath", IgnoreDeath::new);
+		EffectHandler.getInstance().registerHandler("ImmobileDamageBonus", ImmobileDamageBonus::new);
+		EffectHandler.getInstance().registerHandler("ImmobileDamageResist", ImmobileDamageResist::new);
 		EffectHandler.getInstance().registerHandler("ImmobilePetBuff", ImmobilePetBuff::new);
 		EffectHandler.getInstance().registerHandler("InstantKillResist", InstantKillResist::new);
 		EffectHandler.getInstance().registerHandler("JewelSlot", JewelSlot::new);
diff --git a/L2J_Mobius_1.0_Ertheia/dist/game/data/scripts/handlers/effecthandlers/ImmobileDamageBonus.java b/L2J_Mobius_1.0_Ertheia/dist/game/data/scripts/handlers/effecthandlers/ImmobileDamageBonus.java
new file mode 100644
index 0000000000..f124e67e2d
--- /dev/null
+++ b/L2J_Mobius_1.0_Ertheia/dist/game/data/scripts/handlers/effecthandlers/ImmobileDamageBonus.java
@@ -0,0 +1,32 @@
+/*
+ * 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;
+
+/**
+ * Bonus damage to immobile targets.
+ * @author Mobius
+ */
+public class ImmobileDamageBonus extends AbstractStatPercentEffect
+{
+	public ImmobileDamageBonus(StatSet params)
+	{
+		super(params, Stat.IMMOBILE_DAMAGE_BONUS);
+	}
+}
diff --git a/L2J_Mobius_1.0_Ertheia/dist/game/data/scripts/handlers/effecthandlers/ImmobileDamageResist.java b/L2J_Mobius_1.0_Ertheia/dist/game/data/scripts/handlers/effecthandlers/ImmobileDamageResist.java
new file mode 100644
index 0000000000..5a14501280
--- /dev/null
+++ b/L2J_Mobius_1.0_Ertheia/dist/game/data/scripts/handlers/effecthandlers/ImmobileDamageResist.java
@@ -0,0 +1,32 @@
+/*
+ * 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;
+
+/**
+ * Resist damage while immobile.
+ * @author Mobius
+ */
+public class ImmobileDamageResist extends AbstractStatPercentEffect
+{
+	public ImmobileDamageResist(StatSet params)
+	{
+		super(params, Stat.IMMOBILE_DAMAGE_RESIST);
+	}
+}
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 d480168313..1acd9a9bae 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
@@ -149,7 +149,9 @@ Hp: Increases current HP by a static value.
 HpRegen: HP Regeneration stat.
 HpToOwner: DOT effect that absorbs HP over time.
 IgnoreDeath: Become undying. Hp cannot decrease below 1.
-ImmobilePetBuff: Causes your pet to become immobolized.
+ImmobileDamageBonus: Bonus damage to immobile targets. (l2jmobius)
+ImmobileDamageResist: Resist damage while immobile. (l2jmobius)
+ImmobilePetBuff: Causes your pet to become immobilized.
 InstantKillResist: Resist against Lethal strike.
 KarmaCount: Sets current Karma.
 KnockBack: Knocks back or knocks down target.
diff --git a/L2J_Mobius_1.0_Ertheia/java/org/l2jmobius/gameserver/model/actor/Creature.java b/L2J_Mobius_1.0_Ertheia/java/org/l2jmobius/gameserver/model/actor/Creature.java
index c01ad8c681..49e9777716 100644
--- a/L2J_Mobius_1.0_Ertheia/java/org/l2jmobius/gameserver/model/actor/Creature.java
+++ b/L2J_Mobius_1.0_Ertheia/java/org/l2jmobius/gameserver/model/actor/Creature.java
@@ -4383,6 +4383,13 @@ public abstract class Creature extends WorldObject implements ISkillsHolder, IDe
 		
 		getAI().clientStartAutoAttack();
 		
+		// ImmobileDamageBonus and ImmobileDamageResist effect bonuses.
+		if (target.isImmobilized())
+		{
+			damage *= _stat.getValue(Stat.IMMOBILE_DAMAGE_BONUS, 1);
+			damage /= target.getStat().getValue(Stat.IMMOBILE_DAMAGE_RESIST, 1);
+		}
+		
 		if (!reflect && !isDOT)
 		{
 			// RearDamage effect 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 1e2a81e3a4..6bd9bb0c04 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
@@ -19,7 +19,6 @@ package org.l2jmobius.gameserver.model.stats;
 import java.util.NoSuchElementException;
 import java.util.OptionalDouble;
 import java.util.function.DoubleBinaryOperator;
-import java.util.logging.Logger;
 
 import org.l2jmobius.gameserver.enums.AttributeType;
 import org.l2jmobius.gameserver.model.actor.Creature;
@@ -281,9 +280,11 @@ public enum Stat
 	STAT_BONUS_SPEED("statSpeed"),
 	SHOTS_BONUS("shotBonus", new ShotsBonusFinalizer()),
 	WORLD_CHAT_POINTS("worldChatPoints"),
-	ATTACK_DAMAGE("attackDamage");
+	ATTACK_DAMAGE("attackDamage"),
+	
+	IMMOBILE_DAMAGE_BONUS("immobileBonus"),
+	IMMOBILE_DAMAGE_RESIST("immobileResist");
 	
-	static final Logger LOGGER = Logger.getLogger(Stat.class.getName());
 	public static final int NUM_STATS = values().length;
 	
 	private final String _value;
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 eeee25f75d..1aeadb9bef 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
@@ -178,6 +178,8 @@ public class EffectMasterHandler
 		EffectHandler.getInstance().registerHandler("HpRegen", HpRegen::new);
 		EffectHandler.getInstance().registerHandler("HpToOwner", HpToOwner::new);
 		EffectHandler.getInstance().registerHandler("IgnoreDeath", IgnoreDeath::new);
+		EffectHandler.getInstance().registerHandler("ImmobileDamageBonus", ImmobileDamageBonus::new);
+		EffectHandler.getInstance().registerHandler("ImmobileDamageResist", ImmobileDamageResist::new);
 		EffectHandler.getInstance().registerHandler("ImmobilePetBuff", ImmobilePetBuff::new);
 		EffectHandler.getInstance().registerHandler("InstantKillResist", InstantKillResist::new);
 		EffectHandler.getInstance().registerHandler("JewelSlot", JewelSlot::new);
diff --git a/L2J_Mobius_2.5_Underground/dist/game/data/scripts/handlers/effecthandlers/ImmobileDamageBonus.java b/L2J_Mobius_2.5_Underground/dist/game/data/scripts/handlers/effecthandlers/ImmobileDamageBonus.java
new file mode 100644
index 0000000000..f124e67e2d
--- /dev/null
+++ b/L2J_Mobius_2.5_Underground/dist/game/data/scripts/handlers/effecthandlers/ImmobileDamageBonus.java
@@ -0,0 +1,32 @@
+/*
+ * 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;
+
+/**
+ * Bonus damage to immobile targets.
+ * @author Mobius
+ */
+public class ImmobileDamageBonus extends AbstractStatPercentEffect
+{
+	public ImmobileDamageBonus(StatSet params)
+	{
+		super(params, Stat.IMMOBILE_DAMAGE_BONUS);
+	}
+}
diff --git a/L2J_Mobius_2.5_Underground/dist/game/data/scripts/handlers/effecthandlers/ImmobileDamageResist.java b/L2J_Mobius_2.5_Underground/dist/game/data/scripts/handlers/effecthandlers/ImmobileDamageResist.java
new file mode 100644
index 0000000000..5a14501280
--- /dev/null
+++ b/L2J_Mobius_2.5_Underground/dist/game/data/scripts/handlers/effecthandlers/ImmobileDamageResist.java
@@ -0,0 +1,32 @@
+/*
+ * 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;
+
+/**
+ * Resist damage while immobile.
+ * @author Mobius
+ */
+public class ImmobileDamageResist extends AbstractStatPercentEffect
+{
+	public ImmobileDamageResist(StatSet params)
+	{
+		super(params, Stat.IMMOBILE_DAMAGE_RESIST);
+	}
+}
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 d480168313..1acd9a9bae 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
@@ -149,7 +149,9 @@ Hp: Increases current HP by a static value.
 HpRegen: HP Regeneration stat.
 HpToOwner: DOT effect that absorbs HP over time.
 IgnoreDeath: Become undying. Hp cannot decrease below 1.
-ImmobilePetBuff: Causes your pet to become immobolized.
+ImmobileDamageBonus: Bonus damage to immobile targets. (l2jmobius)
+ImmobileDamageResist: Resist damage while immobile. (l2jmobius)
+ImmobilePetBuff: Causes your pet to become immobilized.
 InstantKillResist: Resist against Lethal strike.
 KarmaCount: Sets current Karma.
 KnockBack: Knocks back or knocks down target.
diff --git a/L2J_Mobius_2.5_Underground/java/org/l2jmobius/gameserver/model/actor/Creature.java b/L2J_Mobius_2.5_Underground/java/org/l2jmobius/gameserver/model/actor/Creature.java
index c01ad8c681..49e9777716 100644
--- a/L2J_Mobius_2.5_Underground/java/org/l2jmobius/gameserver/model/actor/Creature.java
+++ b/L2J_Mobius_2.5_Underground/java/org/l2jmobius/gameserver/model/actor/Creature.java
@@ -4383,6 +4383,13 @@ public abstract class Creature extends WorldObject implements ISkillsHolder, IDe
 		
 		getAI().clientStartAutoAttack();
 		
+		// ImmobileDamageBonus and ImmobileDamageResist effect bonuses.
+		if (target.isImmobilized())
+		{
+			damage *= _stat.getValue(Stat.IMMOBILE_DAMAGE_BONUS, 1);
+			damage /= target.getStat().getValue(Stat.IMMOBILE_DAMAGE_RESIST, 1);
+		}
+		
 		if (!reflect && !isDOT)
 		{
 			// RearDamage effect 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 1e2a81e3a4..6bd9bb0c04 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
@@ -19,7 +19,6 @@ package org.l2jmobius.gameserver.model.stats;
 import java.util.NoSuchElementException;
 import java.util.OptionalDouble;
 import java.util.function.DoubleBinaryOperator;
-import java.util.logging.Logger;
 
 import org.l2jmobius.gameserver.enums.AttributeType;
 import org.l2jmobius.gameserver.model.actor.Creature;
@@ -281,9 +280,11 @@ public enum Stat
 	STAT_BONUS_SPEED("statSpeed"),
 	SHOTS_BONUS("shotBonus", new ShotsBonusFinalizer()),
 	WORLD_CHAT_POINTS("worldChatPoints"),
-	ATTACK_DAMAGE("attackDamage");
+	ATTACK_DAMAGE("attackDamage"),
+	
+	IMMOBILE_DAMAGE_BONUS("immobileBonus"),
+	IMMOBILE_DAMAGE_RESIST("immobileResist");
 	
-	static final Logger LOGGER = Logger.getLogger(Stat.class.getName());
 	public static final int NUM_STATS = values().length;
 	
 	private final String _value;
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 eeee25f75d..1aeadb9bef 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
@@ -178,6 +178,8 @@ public class EffectMasterHandler
 		EffectHandler.getInstance().registerHandler("HpRegen", HpRegen::new);
 		EffectHandler.getInstance().registerHandler("HpToOwner", HpToOwner::new);
 		EffectHandler.getInstance().registerHandler("IgnoreDeath", IgnoreDeath::new);
+		EffectHandler.getInstance().registerHandler("ImmobileDamageBonus", ImmobileDamageBonus::new);
+		EffectHandler.getInstance().registerHandler("ImmobileDamageResist", ImmobileDamageResist::new);
 		EffectHandler.getInstance().registerHandler("ImmobilePetBuff", ImmobilePetBuff::new);
 		EffectHandler.getInstance().registerHandler("InstantKillResist", InstantKillResist::new);
 		EffectHandler.getInstance().registerHandler("JewelSlot", JewelSlot::new);
diff --git a/L2J_Mobius_3.0_Helios/dist/game/data/scripts/handlers/effecthandlers/ImmobileDamageBonus.java b/L2J_Mobius_3.0_Helios/dist/game/data/scripts/handlers/effecthandlers/ImmobileDamageBonus.java
new file mode 100644
index 0000000000..f124e67e2d
--- /dev/null
+++ b/L2J_Mobius_3.0_Helios/dist/game/data/scripts/handlers/effecthandlers/ImmobileDamageBonus.java
@@ -0,0 +1,32 @@
+/*
+ * 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;
+
+/**
+ * Bonus damage to immobile targets.
+ * @author Mobius
+ */
+public class ImmobileDamageBonus extends AbstractStatPercentEffect
+{
+	public ImmobileDamageBonus(StatSet params)
+	{
+		super(params, Stat.IMMOBILE_DAMAGE_BONUS);
+	}
+}
diff --git a/L2J_Mobius_3.0_Helios/dist/game/data/scripts/handlers/effecthandlers/ImmobileDamageResist.java b/L2J_Mobius_3.0_Helios/dist/game/data/scripts/handlers/effecthandlers/ImmobileDamageResist.java
new file mode 100644
index 0000000000..5a14501280
--- /dev/null
+++ b/L2J_Mobius_3.0_Helios/dist/game/data/scripts/handlers/effecthandlers/ImmobileDamageResist.java
@@ -0,0 +1,32 @@
+/*
+ * 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;
+
+/**
+ * Resist damage while immobile.
+ * @author Mobius
+ */
+public class ImmobileDamageResist extends AbstractStatPercentEffect
+{
+	public ImmobileDamageResist(StatSet params)
+	{
+		super(params, Stat.IMMOBILE_DAMAGE_RESIST);
+	}
+}
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 d480168313..1acd9a9bae 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
@@ -149,7 +149,9 @@ Hp: Increases current HP by a static value.
 HpRegen: HP Regeneration stat.
 HpToOwner: DOT effect that absorbs HP over time.
 IgnoreDeath: Become undying. Hp cannot decrease below 1.
-ImmobilePetBuff: Causes your pet to become immobolized.
+ImmobileDamageBonus: Bonus damage to immobile targets. (l2jmobius)
+ImmobileDamageResist: Resist damage while immobile. (l2jmobius)
+ImmobilePetBuff: Causes your pet to become immobilized.
 InstantKillResist: Resist against Lethal strike.
 KarmaCount: Sets current Karma.
 KnockBack: Knocks back or knocks down target.
diff --git a/L2J_Mobius_3.0_Helios/java/org/l2jmobius/gameserver/model/actor/Creature.java b/L2J_Mobius_3.0_Helios/java/org/l2jmobius/gameserver/model/actor/Creature.java
index baa6d8b8d9..11c7a5afd2 100644
--- a/L2J_Mobius_3.0_Helios/java/org/l2jmobius/gameserver/model/actor/Creature.java
+++ b/L2J_Mobius_3.0_Helios/java/org/l2jmobius/gameserver/model/actor/Creature.java
@@ -4383,6 +4383,13 @@ public abstract class Creature extends WorldObject implements ISkillsHolder, IDe
 		
 		getAI().clientStartAutoAttack();
 		
+		// ImmobileDamageBonus and ImmobileDamageResist effect bonuses.
+		if (target.isImmobilized())
+		{
+			damage *= _stat.getValue(Stat.IMMOBILE_DAMAGE_BONUS, 1);
+			damage /= target.getStat().getValue(Stat.IMMOBILE_DAMAGE_RESIST, 1);
+		}
+		
 		if (!reflect && !isDOT)
 		{
 			// RearDamage effect 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 1e2a81e3a4..6bd9bb0c04 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
@@ -19,7 +19,6 @@ package org.l2jmobius.gameserver.model.stats;
 import java.util.NoSuchElementException;
 import java.util.OptionalDouble;
 import java.util.function.DoubleBinaryOperator;
-import java.util.logging.Logger;
 
 import org.l2jmobius.gameserver.enums.AttributeType;
 import org.l2jmobius.gameserver.model.actor.Creature;
@@ -281,9 +280,11 @@ public enum Stat
 	STAT_BONUS_SPEED("statSpeed"),
 	SHOTS_BONUS("shotBonus", new ShotsBonusFinalizer()),
 	WORLD_CHAT_POINTS("worldChatPoints"),
-	ATTACK_DAMAGE("attackDamage");
+	ATTACK_DAMAGE("attackDamage"),
+	
+	IMMOBILE_DAMAGE_BONUS("immobileBonus"),
+	IMMOBILE_DAMAGE_RESIST("immobileResist");
 	
-	static final Logger LOGGER = Logger.getLogger(Stat.class.getName());
 	public static final int NUM_STATS = values().length;
 	
 	private final String _value;
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 fa7cbaf40c..c946aa3947 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
@@ -182,6 +182,8 @@ public class EffectMasterHandler
 		EffectHandler.getInstance().registerHandler("HpRegen", HpRegen::new);
 		EffectHandler.getInstance().registerHandler("HpToOwner", HpToOwner::new);
 		EffectHandler.getInstance().registerHandler("IgnoreDeath", IgnoreDeath::new);
+		EffectHandler.getInstance().registerHandler("ImmobileDamageBonus", ImmobileDamageBonus::new);
+		EffectHandler.getInstance().registerHandler("ImmobileDamageResist", ImmobileDamageResist::new);
 		EffectHandler.getInstance().registerHandler("ImmobilePetBuff", ImmobilePetBuff::new);
 		EffectHandler.getInstance().registerHandler("InstantKillResist", InstantKillResist::new);
 		EffectHandler.getInstance().registerHandler("JewelSlot", JewelSlot::new);
diff --git a/L2J_Mobius_4.0_GrandCrusade/dist/game/data/scripts/handlers/effecthandlers/ImmobileDamageBonus.java b/L2J_Mobius_4.0_GrandCrusade/dist/game/data/scripts/handlers/effecthandlers/ImmobileDamageBonus.java
new file mode 100644
index 0000000000..f124e67e2d
--- /dev/null
+++ b/L2J_Mobius_4.0_GrandCrusade/dist/game/data/scripts/handlers/effecthandlers/ImmobileDamageBonus.java
@@ -0,0 +1,32 @@
+/*
+ * 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;
+
+/**
+ * Bonus damage to immobile targets.
+ * @author Mobius
+ */
+public class ImmobileDamageBonus extends AbstractStatPercentEffect
+{
+	public ImmobileDamageBonus(StatSet params)
+	{
+		super(params, Stat.IMMOBILE_DAMAGE_BONUS);
+	}
+}
diff --git a/L2J_Mobius_4.0_GrandCrusade/dist/game/data/scripts/handlers/effecthandlers/ImmobileDamageResist.java b/L2J_Mobius_4.0_GrandCrusade/dist/game/data/scripts/handlers/effecthandlers/ImmobileDamageResist.java
new file mode 100644
index 0000000000..5a14501280
--- /dev/null
+++ b/L2J_Mobius_4.0_GrandCrusade/dist/game/data/scripts/handlers/effecthandlers/ImmobileDamageResist.java
@@ -0,0 +1,32 @@
+/*
+ * 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;
+
+/**
+ * Resist damage while immobile.
+ * @author Mobius
+ */
+public class ImmobileDamageResist extends AbstractStatPercentEffect
+{
+	public ImmobileDamageResist(StatSet params)
+	{
+		super(params, Stat.IMMOBILE_DAMAGE_RESIST);
+	}
+}
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 9bd91e0781..08d4426656 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
@@ -153,7 +153,9 @@ Hp: Increases current HP by a static value.
 HpRegen: HP Regeneration stat.
 HpToOwner: DOT effect that absorbs HP over time.
 IgnoreDeath: Become undying. Hp cannot decrease below 1.
-ImmobilePetBuff: Causes your pet to become immobolized.
+ImmobileDamageBonus: Bonus damage to immobile targets. (l2jmobius)
+ImmobileDamageResist: Resist damage while immobile. (l2jmobius)
+ImmobilePetBuff: Causes your pet to become immobilized.
 InstantKillResist: Resist against Lethal strike.
 KarmaCount: Sets current Karma.
 KnockBack: Knocks back or knocks down target.
diff --git a/L2J_Mobius_4.0_GrandCrusade/java/org/l2jmobius/gameserver/model/actor/Creature.java b/L2J_Mobius_4.0_GrandCrusade/java/org/l2jmobius/gameserver/model/actor/Creature.java
index baa6d8b8d9..11c7a5afd2 100644
--- a/L2J_Mobius_4.0_GrandCrusade/java/org/l2jmobius/gameserver/model/actor/Creature.java
+++ b/L2J_Mobius_4.0_GrandCrusade/java/org/l2jmobius/gameserver/model/actor/Creature.java
@@ -4383,6 +4383,13 @@ public abstract class Creature extends WorldObject implements ISkillsHolder, IDe
 		
 		getAI().clientStartAutoAttack();
 		
+		// ImmobileDamageBonus and ImmobileDamageResist effect bonuses.
+		if (target.isImmobilized())
+		{
+			damage *= _stat.getValue(Stat.IMMOBILE_DAMAGE_BONUS, 1);
+			damage /= target.getStat().getValue(Stat.IMMOBILE_DAMAGE_RESIST, 1);
+		}
+		
 		if (!reflect && !isDOT)
 		{
 			// RearDamage effect 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 804220c9dc..3169a93be9 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
@@ -19,7 +19,6 @@ package org.l2jmobius.gameserver.model.stats;
 import java.util.NoSuchElementException;
 import java.util.OptionalDouble;
 import java.util.function.DoubleBinaryOperator;
-import java.util.logging.Logger;
 
 import org.l2jmobius.gameserver.enums.AttributeType;
 import org.l2jmobius.gameserver.model.actor.Creature;
@@ -282,9 +281,11 @@ public enum Stat
 	CRAFTING_CRITICAL("craftingCritical"),
 	SHOTS_BONUS("shotBonus", new ShotsBonusFinalizer()),
 	WORLD_CHAT_POINTS("worldChatPoints"),
-	ATTACK_DAMAGE("attackDamage");
+	ATTACK_DAMAGE("attackDamage"),
+	
+	IMMOBILE_DAMAGE_BONUS("immobileBonus"),
+	IMMOBILE_DAMAGE_RESIST("immobileResist");
 	
-	static final Logger LOGGER = Logger.getLogger(Stat.class.getName());
 	public static final int NUM_STATS = values().length;
 	
 	private final String _value;
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 40be12cc64..141bca50fc 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
@@ -184,6 +184,8 @@ public class EffectMasterHandler
 		EffectHandler.getInstance().registerHandler("HpRegen", HpRegen::new);
 		EffectHandler.getInstance().registerHandler("HpToOwner", HpToOwner::new);
 		EffectHandler.getInstance().registerHandler("IgnoreDeath", IgnoreDeath::new);
+		EffectHandler.getInstance().registerHandler("ImmobileDamageBonus", ImmobileDamageBonus::new);
+		EffectHandler.getInstance().registerHandler("ImmobileDamageResist", ImmobileDamageResist::new);
 		EffectHandler.getInstance().registerHandler("ImmobilePetBuff", ImmobilePetBuff::new);
 		EffectHandler.getInstance().registerHandler("InstantKillResist", InstantKillResist::new);
 		EffectHandler.getInstance().registerHandler("JewelSlot", JewelSlot::new);
diff --git a/L2J_Mobius_5.0_Salvation/dist/game/data/scripts/handlers/effecthandlers/ImmobileDamageBonus.java b/L2J_Mobius_5.0_Salvation/dist/game/data/scripts/handlers/effecthandlers/ImmobileDamageBonus.java
new file mode 100644
index 0000000000..f124e67e2d
--- /dev/null
+++ b/L2J_Mobius_5.0_Salvation/dist/game/data/scripts/handlers/effecthandlers/ImmobileDamageBonus.java
@@ -0,0 +1,32 @@
+/*
+ * 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;
+
+/**
+ * Bonus damage to immobile targets.
+ * @author Mobius
+ */
+public class ImmobileDamageBonus extends AbstractStatPercentEffect
+{
+	public ImmobileDamageBonus(StatSet params)
+	{
+		super(params, Stat.IMMOBILE_DAMAGE_BONUS);
+	}
+}
diff --git a/L2J_Mobius_5.0_Salvation/dist/game/data/scripts/handlers/effecthandlers/ImmobileDamageResist.java b/L2J_Mobius_5.0_Salvation/dist/game/data/scripts/handlers/effecthandlers/ImmobileDamageResist.java
new file mode 100644
index 0000000000..5a14501280
--- /dev/null
+++ b/L2J_Mobius_5.0_Salvation/dist/game/data/scripts/handlers/effecthandlers/ImmobileDamageResist.java
@@ -0,0 +1,32 @@
+/*
+ * 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;
+
+/**
+ * Resist damage while immobile.
+ * @author Mobius
+ */
+public class ImmobileDamageResist extends AbstractStatPercentEffect
+{
+	public ImmobileDamageResist(StatSet params)
+	{
+		super(params, Stat.IMMOBILE_DAMAGE_RESIST);
+	}
+}
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 c13bfb7e7d..5195e10161 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
@@ -155,7 +155,9 @@ Hp: Increases current HP by a static value.
 HpRegen: HP Regeneration stat.
 HpToOwner: DOT effect that absorbs HP over time.
 IgnoreDeath: Become undying. Hp cannot decrease below 1.
-ImmobilePetBuff: Causes your pet to become immobolized.
+ImmobileDamageBonus: Bonus damage to immobile targets. (l2jmobius)
+ImmobileDamageResist: Resist damage while immobile. (l2jmobius)
+ImmobilePetBuff: Causes your pet to become immobilized.
 InstantKillResist: Resist against Lethal strike.
 KarmaCount: Sets current Karma.
 KnockBack: Knocks back or knocks down target.
diff --git a/L2J_Mobius_5.0_Salvation/java/org/l2jmobius/gameserver/model/actor/Creature.java b/L2J_Mobius_5.0_Salvation/java/org/l2jmobius/gameserver/model/actor/Creature.java
index feac9dcb60..8e636ff929 100644
--- a/L2J_Mobius_5.0_Salvation/java/org/l2jmobius/gameserver/model/actor/Creature.java
+++ b/L2J_Mobius_5.0_Salvation/java/org/l2jmobius/gameserver/model/actor/Creature.java
@@ -4383,6 +4383,13 @@ public abstract class Creature extends WorldObject implements ISkillsHolder, IDe
 		
 		getAI().clientStartAutoAttack();
 		
+		// ImmobileDamageBonus and ImmobileDamageResist effect bonuses.
+		if (target.isImmobilized())
+		{
+			damage *= _stat.getValue(Stat.IMMOBILE_DAMAGE_BONUS, 1);
+			damage /= target.getStat().getValue(Stat.IMMOBILE_DAMAGE_RESIST, 1);
+		}
+		
 		if (!reflect && !isDOT)
 		{
 			// RearDamage effect 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 80d2def63e..3bf1e47c2e 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
@@ -19,7 +19,6 @@ package org.l2jmobius.gameserver.model.stats;
 import java.util.NoSuchElementException;
 import java.util.OptionalDouble;
 import java.util.function.DoubleBinaryOperator;
-import java.util.logging.Logger;
 
 import org.l2jmobius.gameserver.enums.AttributeType;
 import org.l2jmobius.gameserver.model.actor.Creature;
@@ -287,9 +286,11 @@ public enum Stat
 	CRAFTING_CRITICAL("craftingCritical"),
 	SHOTS_BONUS("shotBonus", new ShotsBonusFinalizer()),
 	WORLD_CHAT_POINTS("worldChatPoints"),
-	ATTACK_DAMAGE("attackDamage");
+	ATTACK_DAMAGE("attackDamage"),
+	
+	IMMOBILE_DAMAGE_BONUS("immobileBonus"),
+	IMMOBILE_DAMAGE_RESIST("immobileResist");
 	
-	static final Logger LOGGER = Logger.getLogger(Stat.class.getName());
 	public static final int NUM_STATS = values().length;
 	
 	private final String _value;
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 599a1dd011..21d2f8e4e8 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
@@ -185,6 +185,8 @@ public class EffectMasterHandler
 		EffectHandler.getInstance().registerHandler("HpRegen", HpRegen::new);
 		EffectHandler.getInstance().registerHandler("HpToOwner", HpToOwner::new);
 		EffectHandler.getInstance().registerHandler("IgnoreDeath", IgnoreDeath::new);
+		EffectHandler.getInstance().registerHandler("ImmobileDamageBonus", ImmobileDamageBonus::new);
+		EffectHandler.getInstance().registerHandler("ImmobileDamageResist", ImmobileDamageResist::new);
 		EffectHandler.getInstance().registerHandler("ImmobilePetBuff", ImmobilePetBuff::new);
 		EffectHandler.getInstance().registerHandler("InstantKillResist", InstantKillResist::new);
 		EffectHandler.getInstance().registerHandler("JewelSlot", JewelSlot::new);
diff --git a/L2J_Mobius_5.5_EtinasFate/dist/game/data/scripts/handlers/effecthandlers/ImmobileDamageBonus.java b/L2J_Mobius_5.5_EtinasFate/dist/game/data/scripts/handlers/effecthandlers/ImmobileDamageBonus.java
new file mode 100644
index 0000000000..f124e67e2d
--- /dev/null
+++ b/L2J_Mobius_5.5_EtinasFate/dist/game/data/scripts/handlers/effecthandlers/ImmobileDamageBonus.java
@@ -0,0 +1,32 @@
+/*
+ * 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;
+
+/**
+ * Bonus damage to immobile targets.
+ * @author Mobius
+ */
+public class ImmobileDamageBonus extends AbstractStatPercentEffect
+{
+	public ImmobileDamageBonus(StatSet params)
+	{
+		super(params, Stat.IMMOBILE_DAMAGE_BONUS);
+	}
+}
diff --git a/L2J_Mobius_5.5_EtinasFate/dist/game/data/scripts/handlers/effecthandlers/ImmobileDamageResist.java b/L2J_Mobius_5.5_EtinasFate/dist/game/data/scripts/handlers/effecthandlers/ImmobileDamageResist.java
new file mode 100644
index 0000000000..5a14501280
--- /dev/null
+++ b/L2J_Mobius_5.5_EtinasFate/dist/game/data/scripts/handlers/effecthandlers/ImmobileDamageResist.java
@@ -0,0 +1,32 @@
+/*
+ * 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;
+
+/**
+ * Resist damage while immobile.
+ * @author Mobius
+ */
+public class ImmobileDamageResist extends AbstractStatPercentEffect
+{
+	public ImmobileDamageResist(StatSet params)
+	{
+		super(params, Stat.IMMOBILE_DAMAGE_RESIST);
+	}
+}
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 6588e71bf7..7abdb283c8 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
@@ -156,7 +156,9 @@ Hp: Increases current HP by a static value.
 HpRegen: HP Regeneration stat.
 HpToOwner: DOT effect that absorbs HP over time.
 IgnoreDeath: Become undying. Hp cannot decrease below 1.
-ImmobilePetBuff: Causes your pet to become immobolized.
+ImmobileDamageBonus: Bonus damage to immobile targets. (l2jmobius)
+ImmobileDamageResist: Resist damage while immobile. (l2jmobius)
+ImmobilePetBuff: Causes your pet to become immobilized.
 InstantKillResist: Resist against Lethal strike.
 KarmaCount: Sets current Karma.
 KnockBack: Knocks back or knocks down target.
diff --git a/L2J_Mobius_5.5_EtinasFate/java/org/l2jmobius/gameserver/model/actor/Creature.java b/L2J_Mobius_5.5_EtinasFate/java/org/l2jmobius/gameserver/model/actor/Creature.java
index feac9dcb60..8e636ff929 100644
--- a/L2J_Mobius_5.5_EtinasFate/java/org/l2jmobius/gameserver/model/actor/Creature.java
+++ b/L2J_Mobius_5.5_EtinasFate/java/org/l2jmobius/gameserver/model/actor/Creature.java
@@ -4383,6 +4383,13 @@ public abstract class Creature extends WorldObject implements ISkillsHolder, IDe
 		
 		getAI().clientStartAutoAttack();
 		
+		// ImmobileDamageBonus and ImmobileDamageResist effect bonuses.
+		if (target.isImmobilized())
+		{
+			damage *= _stat.getValue(Stat.IMMOBILE_DAMAGE_BONUS, 1);
+			damage /= target.getStat().getValue(Stat.IMMOBILE_DAMAGE_RESIST, 1);
+		}
+		
 		if (!reflect && !isDOT)
 		{
 			// RearDamage effect 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 9c03de1477..a52443d4a7 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
@@ -19,7 +19,6 @@ package org.l2jmobius.gameserver.model.stats;
 import java.util.NoSuchElementException;
 import java.util.OptionalDouble;
 import java.util.function.DoubleBinaryOperator;
-import java.util.logging.Logger;
 
 import org.l2jmobius.gameserver.enums.AttributeType;
 import org.l2jmobius.gameserver.model.actor.Creature;
@@ -290,9 +289,11 @@ public enum Stat
 	CRAFTING_CRITICAL("craftingCritical"),
 	SHOTS_BONUS("shotBonus", new ShotsBonusFinalizer()),
 	WORLD_CHAT_POINTS("worldChatPoints"),
-	ATTACK_DAMAGE("attackDamage");
+	ATTACK_DAMAGE("attackDamage"),
+	
+	IMMOBILE_DAMAGE_BONUS("immobileBonus"),
+	IMMOBILE_DAMAGE_RESIST("immobileResist");
 	
-	static final Logger LOGGER = Logger.getLogger(Stat.class.getName());
 	public static final int NUM_STATS = values().length;
 	
 	private final String _value;
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 599a1dd011..21d2f8e4e8 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
@@ -185,6 +185,8 @@ public class EffectMasterHandler
 		EffectHandler.getInstance().registerHandler("HpRegen", HpRegen::new);
 		EffectHandler.getInstance().registerHandler("HpToOwner", HpToOwner::new);
 		EffectHandler.getInstance().registerHandler("IgnoreDeath", IgnoreDeath::new);
+		EffectHandler.getInstance().registerHandler("ImmobileDamageBonus", ImmobileDamageBonus::new);
+		EffectHandler.getInstance().registerHandler("ImmobileDamageResist", ImmobileDamageResist::new);
 		EffectHandler.getInstance().registerHandler("ImmobilePetBuff", ImmobilePetBuff::new);
 		EffectHandler.getInstance().registerHandler("InstantKillResist", InstantKillResist::new);
 		EffectHandler.getInstance().registerHandler("JewelSlot", JewelSlot::new);
diff --git a/L2J_Mobius_6.0_Fafurion/dist/game/data/scripts/handlers/effecthandlers/ImmobileDamageBonus.java b/L2J_Mobius_6.0_Fafurion/dist/game/data/scripts/handlers/effecthandlers/ImmobileDamageBonus.java
new file mode 100644
index 0000000000..f124e67e2d
--- /dev/null
+++ b/L2J_Mobius_6.0_Fafurion/dist/game/data/scripts/handlers/effecthandlers/ImmobileDamageBonus.java
@@ -0,0 +1,32 @@
+/*
+ * 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;
+
+/**
+ * Bonus damage to immobile targets.
+ * @author Mobius
+ */
+public class ImmobileDamageBonus extends AbstractStatPercentEffect
+{
+	public ImmobileDamageBonus(StatSet params)
+	{
+		super(params, Stat.IMMOBILE_DAMAGE_BONUS);
+	}
+}
diff --git a/L2J_Mobius_6.0_Fafurion/dist/game/data/scripts/handlers/effecthandlers/ImmobileDamageResist.java b/L2J_Mobius_6.0_Fafurion/dist/game/data/scripts/handlers/effecthandlers/ImmobileDamageResist.java
new file mode 100644
index 0000000000..5a14501280
--- /dev/null
+++ b/L2J_Mobius_6.0_Fafurion/dist/game/data/scripts/handlers/effecthandlers/ImmobileDamageResist.java
@@ -0,0 +1,32 @@
+/*
+ * 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;
+
+/**
+ * Resist damage while immobile.
+ * @author Mobius
+ */
+public class ImmobileDamageResist extends AbstractStatPercentEffect
+{
+	public ImmobileDamageResist(StatSet params)
+	{
+		super(params, Stat.IMMOBILE_DAMAGE_RESIST);
+	}
+}
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 6588e71bf7..7abdb283c8 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
@@ -156,7 +156,9 @@ Hp: Increases current HP by a static value.
 HpRegen: HP Regeneration stat.
 HpToOwner: DOT effect that absorbs HP over time.
 IgnoreDeath: Become undying. Hp cannot decrease below 1.
-ImmobilePetBuff: Causes your pet to become immobolized.
+ImmobileDamageBonus: Bonus damage to immobile targets. (l2jmobius)
+ImmobileDamageResist: Resist damage while immobile. (l2jmobius)
+ImmobilePetBuff: Causes your pet to become immobilized.
 InstantKillResist: Resist against Lethal strike.
 KarmaCount: Sets current Karma.
 KnockBack: Knocks back or knocks down target.
diff --git a/L2J_Mobius_6.0_Fafurion/java/org/l2jmobius/gameserver/model/actor/Creature.java b/L2J_Mobius_6.0_Fafurion/java/org/l2jmobius/gameserver/model/actor/Creature.java
index feac9dcb60..8e636ff929 100644
--- a/L2J_Mobius_6.0_Fafurion/java/org/l2jmobius/gameserver/model/actor/Creature.java
+++ b/L2J_Mobius_6.0_Fafurion/java/org/l2jmobius/gameserver/model/actor/Creature.java
@@ -4383,6 +4383,13 @@ public abstract class Creature extends WorldObject implements ISkillsHolder, IDe
 		
 		getAI().clientStartAutoAttack();
 		
+		// ImmobileDamageBonus and ImmobileDamageResist effect bonuses.
+		if (target.isImmobilized())
+		{
+			damage *= _stat.getValue(Stat.IMMOBILE_DAMAGE_BONUS, 1);
+			damage /= target.getStat().getValue(Stat.IMMOBILE_DAMAGE_RESIST, 1);
+		}
+		
 		if (!reflect && !isDOT)
 		{
 			// RearDamage effect 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 9c03de1477..a52443d4a7 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
@@ -19,7 +19,6 @@ package org.l2jmobius.gameserver.model.stats;
 import java.util.NoSuchElementException;
 import java.util.OptionalDouble;
 import java.util.function.DoubleBinaryOperator;
-import java.util.logging.Logger;
 
 import org.l2jmobius.gameserver.enums.AttributeType;
 import org.l2jmobius.gameserver.model.actor.Creature;
@@ -290,9 +289,11 @@ public enum Stat
 	CRAFTING_CRITICAL("craftingCritical"),
 	SHOTS_BONUS("shotBonus", new ShotsBonusFinalizer()),
 	WORLD_CHAT_POINTS("worldChatPoints"),
-	ATTACK_DAMAGE("attackDamage");
+	ATTACK_DAMAGE("attackDamage"),
+	
+	IMMOBILE_DAMAGE_BONUS("immobileBonus"),
+	IMMOBILE_DAMAGE_RESIST("immobileResist");
 	
-	static final Logger LOGGER = Logger.getLogger(Stat.class.getName());
 	public static final int NUM_STATS = values().length;
 	
 	private final String _value;
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 c7ac2328c3..247354c068 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
@@ -185,6 +185,8 @@ public class EffectMasterHandler
 		EffectHandler.getInstance().registerHandler("HpRegen", HpRegen::new);
 		EffectHandler.getInstance().registerHandler("HpToOwner", HpToOwner::new);
 		EffectHandler.getInstance().registerHandler("IgnoreDeath", IgnoreDeath::new);
+		EffectHandler.getInstance().registerHandler("ImmobileDamageBonus", ImmobileDamageBonus::new);
+		EffectHandler.getInstance().registerHandler("ImmobileDamageResist", ImmobileDamageResist::new);
 		EffectHandler.getInstance().registerHandler("ImmobilePetBuff", ImmobilePetBuff::new);
 		EffectHandler.getInstance().registerHandler("InstantKillResist", InstantKillResist::new);
 		EffectHandler.getInstance().registerHandler("JewelSlot", JewelSlot::new);
diff --git a/L2J_Mobius_7.0_PreludeOfWar/dist/game/data/scripts/handlers/effecthandlers/ImmobileDamageBonus.java b/L2J_Mobius_7.0_PreludeOfWar/dist/game/data/scripts/handlers/effecthandlers/ImmobileDamageBonus.java
new file mode 100644
index 0000000000..f124e67e2d
--- /dev/null
+++ b/L2J_Mobius_7.0_PreludeOfWar/dist/game/data/scripts/handlers/effecthandlers/ImmobileDamageBonus.java
@@ -0,0 +1,32 @@
+/*
+ * 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;
+
+/**
+ * Bonus damage to immobile targets.
+ * @author Mobius
+ */
+public class ImmobileDamageBonus extends AbstractStatPercentEffect
+{
+	public ImmobileDamageBonus(StatSet params)
+	{
+		super(params, Stat.IMMOBILE_DAMAGE_BONUS);
+	}
+}
diff --git a/L2J_Mobius_7.0_PreludeOfWar/dist/game/data/scripts/handlers/effecthandlers/ImmobileDamageResist.java b/L2J_Mobius_7.0_PreludeOfWar/dist/game/data/scripts/handlers/effecthandlers/ImmobileDamageResist.java
new file mode 100644
index 0000000000..5a14501280
--- /dev/null
+++ b/L2J_Mobius_7.0_PreludeOfWar/dist/game/data/scripts/handlers/effecthandlers/ImmobileDamageResist.java
@@ -0,0 +1,32 @@
+/*
+ * 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;
+
+/**
+ * Resist damage while immobile.
+ * @author Mobius
+ */
+public class ImmobileDamageResist extends AbstractStatPercentEffect
+{
+	public ImmobileDamageResist(StatSet params)
+	{
+		super(params, Stat.IMMOBILE_DAMAGE_RESIST);
+	}
+}
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 66475ff68e..ef67007b36 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
@@ -156,7 +156,9 @@ Hp: Increases current HP by a static value.
 HpRegen: HP Regeneration stat.
 HpToOwner: DOT effect that absorbs HP over time.
 IgnoreDeath: Become undying. Hp cannot decrease below 1.
-ImmobilePetBuff: Causes your pet to become immobolized.
+ImmobileDamageBonus: Bonus damage to immobile targets. (l2jmobius)
+ImmobileDamageResist: Resist damage while immobile. (l2jmobius)
+ImmobilePetBuff: Causes your pet to become immobilized.
 InstantKillResist: Resist against Lethal strike.
 KarmaCount: Sets current Karma.
 KnockBack: Knocks back or knocks down target.
diff --git a/L2J_Mobius_7.0_PreludeOfWar/java/org/l2jmobius/gameserver/model/actor/Creature.java b/L2J_Mobius_7.0_PreludeOfWar/java/org/l2jmobius/gameserver/model/actor/Creature.java
index e3658e33d1..199a4ea3ca 100644
--- a/L2J_Mobius_7.0_PreludeOfWar/java/org/l2jmobius/gameserver/model/actor/Creature.java
+++ b/L2J_Mobius_7.0_PreludeOfWar/java/org/l2jmobius/gameserver/model/actor/Creature.java
@@ -4382,6 +4382,13 @@ public abstract class Creature extends WorldObject implements ISkillsHolder, IDe
 		
 		getAI().clientStartAutoAttack();
 		
+		// ImmobileDamageBonus and ImmobileDamageResist effect bonuses.
+		if (target.isImmobilized())
+		{
+			damage *= _stat.getValue(Stat.IMMOBILE_DAMAGE_BONUS, 1);
+			damage /= target.getStat().getValue(Stat.IMMOBILE_DAMAGE_RESIST, 1);
+		}
+		
 		if (!reflect && !isDOT)
 		{
 			// RearDamage effect 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 9c03de1477..a52443d4a7 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
@@ -19,7 +19,6 @@ package org.l2jmobius.gameserver.model.stats;
 import java.util.NoSuchElementException;
 import java.util.OptionalDouble;
 import java.util.function.DoubleBinaryOperator;
-import java.util.logging.Logger;
 
 import org.l2jmobius.gameserver.enums.AttributeType;
 import org.l2jmobius.gameserver.model.actor.Creature;
@@ -290,9 +289,11 @@ public enum Stat
 	CRAFTING_CRITICAL("craftingCritical"),
 	SHOTS_BONUS("shotBonus", new ShotsBonusFinalizer()),
 	WORLD_CHAT_POINTS("worldChatPoints"),
-	ATTACK_DAMAGE("attackDamage");
+	ATTACK_DAMAGE("attackDamage"),
+	
+	IMMOBILE_DAMAGE_BONUS("immobileBonus"),
+	IMMOBILE_DAMAGE_RESIST("immobileResist");
 	
-	static final Logger LOGGER = Logger.getLogger(Stat.class.getName());
 	public static final int NUM_STATS = values().length;
 	
 	private final String _value;
diff --git a/L2J_Mobius_Classic_2.0_Saviors/dist/game/data/scripts/handlers/EffectMasterHandler.java b/L2J_Mobius_Classic_2.0_Saviors/dist/game/data/scripts/handlers/EffectMasterHandler.java
index 0ec64be129..3d583f4789 100644
--- a/L2J_Mobius_Classic_2.0_Saviors/dist/game/data/scripts/handlers/EffectMasterHandler.java
+++ b/L2J_Mobius_Classic_2.0_Saviors/dist/game/data/scripts/handlers/EffectMasterHandler.java
@@ -176,6 +176,8 @@ public class EffectMasterHandler
 		EffectHandler.getInstance().registerHandler("HpRegen", HpRegen::new);
 		EffectHandler.getInstance().registerHandler("HpToOwner", HpToOwner::new);
 		EffectHandler.getInstance().registerHandler("IgnoreDeath", IgnoreDeath::new);
+		EffectHandler.getInstance().registerHandler("ImmobileDamageBonus", ImmobileDamageBonus::new);
+		EffectHandler.getInstance().registerHandler("ImmobileDamageResist", ImmobileDamageResist::new);
 		EffectHandler.getInstance().registerHandler("ImmobilePetBuff", ImmobilePetBuff::new);
 		EffectHandler.getInstance().registerHandler("InstantKillResist", InstantKillResist::new);
 		EffectHandler.getInstance().registerHandler("JewelSlot", JewelSlot::new);
diff --git a/L2J_Mobius_Classic_2.0_Saviors/dist/game/data/scripts/handlers/effecthandlers/ImmobileDamageBonus.java b/L2J_Mobius_Classic_2.0_Saviors/dist/game/data/scripts/handlers/effecthandlers/ImmobileDamageBonus.java
new file mode 100644
index 0000000000..f124e67e2d
--- /dev/null
+++ b/L2J_Mobius_Classic_2.0_Saviors/dist/game/data/scripts/handlers/effecthandlers/ImmobileDamageBonus.java
@@ -0,0 +1,32 @@
+/*
+ * 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;
+
+/**
+ * Bonus damage to immobile targets.
+ * @author Mobius
+ */
+public class ImmobileDamageBonus extends AbstractStatPercentEffect
+{
+	public ImmobileDamageBonus(StatSet params)
+	{
+		super(params, Stat.IMMOBILE_DAMAGE_BONUS);
+	}
+}
diff --git a/L2J_Mobius_Classic_2.0_Saviors/dist/game/data/scripts/handlers/effecthandlers/ImmobileDamageResist.java b/L2J_Mobius_Classic_2.0_Saviors/dist/game/data/scripts/handlers/effecthandlers/ImmobileDamageResist.java
new file mode 100644
index 0000000000..5a14501280
--- /dev/null
+++ b/L2J_Mobius_Classic_2.0_Saviors/dist/game/data/scripts/handlers/effecthandlers/ImmobileDamageResist.java
@@ -0,0 +1,32 @@
+/*
+ * 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;
+
+/**
+ * Resist damage while immobile.
+ * @author Mobius
+ */
+public class ImmobileDamageResist extends AbstractStatPercentEffect
+{
+	public ImmobileDamageResist(StatSet params)
+	{
+		super(params, Stat.IMMOBILE_DAMAGE_RESIST);
+	}
+}
diff --git a/L2J_Mobius_Classic_2.0_Saviors/dist/game/data/stats/skills/documentation.txt b/L2J_Mobius_Classic_2.0_Saviors/dist/game/data/stats/skills/documentation.txt
index e33bd7da23..2cf4b61768 100644
--- a/L2J_Mobius_Classic_2.0_Saviors/dist/game/data/stats/skills/documentation.txt
+++ b/L2J_Mobius_Classic_2.0_Saviors/dist/game/data/stats/skills/documentation.txt
@@ -147,7 +147,9 @@ Hp: Increases current HP by a static value.
 HpRegen: HP Regeneration stat.
 HpToOwner: DOT effect that absorbs HP over time.
 IgnoreDeath: Become undying. Hp cannot decrease below 1.
-ImmobilePetBuff: Causes your pet to become immobolized.
+ImmobileDamageBonus: Bonus damage to immobile targets. (l2jmobius)
+ImmobileDamageResist: Resist damage while immobile. (l2jmobius)
+ImmobilePetBuff: Causes your pet to become immobilized.
 InstantKillResist: Resist against Lethal strike.
 KarmaCount: Sets current Karma.
 KnockBack: Knocks back or knocks down target.
diff --git a/L2J_Mobius_Classic_2.0_Saviors/java/org/l2jmobius/gameserver/model/actor/Creature.java b/L2J_Mobius_Classic_2.0_Saviors/java/org/l2jmobius/gameserver/model/actor/Creature.java
index 4d841a5fe9..8e1d560346 100644
--- a/L2J_Mobius_Classic_2.0_Saviors/java/org/l2jmobius/gameserver/model/actor/Creature.java
+++ b/L2J_Mobius_Classic_2.0_Saviors/java/org/l2jmobius/gameserver/model/actor/Creature.java
@@ -4372,6 +4372,13 @@ public abstract class Creature extends WorldObject implements ISkillsHolder, IDe
 		
 		getAI().clientStartAutoAttack();
 		
+		// ImmobileDamageBonus and ImmobileDamageResist effect bonuses.
+		if (target.isImmobilized())
+		{
+			damage *= _stat.getValue(Stat.IMMOBILE_DAMAGE_BONUS, 1);
+			damage /= target.getStat().getValue(Stat.IMMOBILE_DAMAGE_RESIST, 1);
+		}
+		
 		if (!reflect && !isDOT)
 		{
 			// RearDamage effect bonus.
diff --git a/L2J_Mobius_Classic_2.0_Saviors/java/org/l2jmobius/gameserver/model/stats/Stat.java b/L2J_Mobius_Classic_2.0_Saviors/java/org/l2jmobius/gameserver/model/stats/Stat.java
index b04bcf1c3f..d26237d3ab 100644
--- a/L2J_Mobius_Classic_2.0_Saviors/java/org/l2jmobius/gameserver/model/stats/Stat.java
+++ b/L2J_Mobius_Classic_2.0_Saviors/java/org/l2jmobius/gameserver/model/stats/Stat.java
@@ -19,7 +19,6 @@ package org.l2jmobius.gameserver.model.stats;
 import java.util.NoSuchElementException;
 import java.util.OptionalDouble;
 import java.util.function.DoubleBinaryOperator;
-import java.util.logging.Logger;
 
 import org.l2jmobius.gameserver.enums.AttributeType;
 import org.l2jmobius.gameserver.model.actor.Creature;
@@ -279,9 +278,11 @@ public enum Stat
 	STAT_BONUS_SPEED("statSpeed"),
 	SHOTS_BONUS("shotBonus", new ShotsBonusFinalizer()),
 	WORLD_CHAT_POINTS("worldChatPoints"),
-	ATTACK_DAMAGE("attackDamage");
+	ATTACK_DAMAGE("attackDamage"),
+	
+	IMMOBILE_DAMAGE_BONUS("immobileBonus"),
+	IMMOBILE_DAMAGE_RESIST("immobileResist");
 	
-	static final Logger LOGGER = Logger.getLogger(Stat.class.getName());
 	public static final int NUM_STATS = values().length;
 	
 	private final String _value;
diff --git a/L2J_Mobius_Classic_2.1_Zaken/dist/game/data/scripts/handlers/EffectMasterHandler.java b/L2J_Mobius_Classic_2.1_Zaken/dist/game/data/scripts/handlers/EffectMasterHandler.java
index 0ec64be129..3d583f4789 100644
--- a/L2J_Mobius_Classic_2.1_Zaken/dist/game/data/scripts/handlers/EffectMasterHandler.java
+++ b/L2J_Mobius_Classic_2.1_Zaken/dist/game/data/scripts/handlers/EffectMasterHandler.java
@@ -176,6 +176,8 @@ public class EffectMasterHandler
 		EffectHandler.getInstance().registerHandler("HpRegen", HpRegen::new);
 		EffectHandler.getInstance().registerHandler("HpToOwner", HpToOwner::new);
 		EffectHandler.getInstance().registerHandler("IgnoreDeath", IgnoreDeath::new);
+		EffectHandler.getInstance().registerHandler("ImmobileDamageBonus", ImmobileDamageBonus::new);
+		EffectHandler.getInstance().registerHandler("ImmobileDamageResist", ImmobileDamageResist::new);
 		EffectHandler.getInstance().registerHandler("ImmobilePetBuff", ImmobilePetBuff::new);
 		EffectHandler.getInstance().registerHandler("InstantKillResist", InstantKillResist::new);
 		EffectHandler.getInstance().registerHandler("JewelSlot", JewelSlot::new);
diff --git a/L2J_Mobius_Classic_2.1_Zaken/dist/game/data/scripts/handlers/effecthandlers/ImmobileDamageBonus.java b/L2J_Mobius_Classic_2.1_Zaken/dist/game/data/scripts/handlers/effecthandlers/ImmobileDamageBonus.java
new file mode 100644
index 0000000000..f124e67e2d
--- /dev/null
+++ b/L2J_Mobius_Classic_2.1_Zaken/dist/game/data/scripts/handlers/effecthandlers/ImmobileDamageBonus.java
@@ -0,0 +1,32 @@
+/*
+ * 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;
+
+/**
+ * Bonus damage to immobile targets.
+ * @author Mobius
+ */
+public class ImmobileDamageBonus extends AbstractStatPercentEffect
+{
+	public ImmobileDamageBonus(StatSet params)
+	{
+		super(params, Stat.IMMOBILE_DAMAGE_BONUS);
+	}
+}
diff --git a/L2J_Mobius_Classic_2.1_Zaken/dist/game/data/scripts/handlers/effecthandlers/ImmobileDamageResist.java b/L2J_Mobius_Classic_2.1_Zaken/dist/game/data/scripts/handlers/effecthandlers/ImmobileDamageResist.java
new file mode 100644
index 0000000000..5a14501280
--- /dev/null
+++ b/L2J_Mobius_Classic_2.1_Zaken/dist/game/data/scripts/handlers/effecthandlers/ImmobileDamageResist.java
@@ -0,0 +1,32 @@
+/*
+ * 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;
+
+/**
+ * Resist damage while immobile.
+ * @author Mobius
+ */
+public class ImmobileDamageResist extends AbstractStatPercentEffect
+{
+	public ImmobileDamageResist(StatSet params)
+	{
+		super(params, Stat.IMMOBILE_DAMAGE_RESIST);
+	}
+}
diff --git a/L2J_Mobius_Classic_2.1_Zaken/dist/game/data/stats/skills/documentation.txt b/L2J_Mobius_Classic_2.1_Zaken/dist/game/data/stats/skills/documentation.txt
index e33bd7da23..2cf4b61768 100644
--- a/L2J_Mobius_Classic_2.1_Zaken/dist/game/data/stats/skills/documentation.txt
+++ b/L2J_Mobius_Classic_2.1_Zaken/dist/game/data/stats/skills/documentation.txt
@@ -147,7 +147,9 @@ Hp: Increases current HP by a static value.
 HpRegen: HP Regeneration stat.
 HpToOwner: DOT effect that absorbs HP over time.
 IgnoreDeath: Become undying. Hp cannot decrease below 1.
-ImmobilePetBuff: Causes your pet to become immobolized.
+ImmobileDamageBonus: Bonus damage to immobile targets. (l2jmobius)
+ImmobileDamageResist: Resist damage while immobile. (l2jmobius)
+ImmobilePetBuff: Causes your pet to become immobilized.
 InstantKillResist: Resist against Lethal strike.
 KarmaCount: Sets current Karma.
 KnockBack: Knocks back or knocks down target.
diff --git a/L2J_Mobius_Classic_2.1_Zaken/java/org/l2jmobius/gameserver/model/actor/Creature.java b/L2J_Mobius_Classic_2.1_Zaken/java/org/l2jmobius/gameserver/model/actor/Creature.java
index 4d841a5fe9..8e1d560346 100644
--- a/L2J_Mobius_Classic_2.1_Zaken/java/org/l2jmobius/gameserver/model/actor/Creature.java
+++ b/L2J_Mobius_Classic_2.1_Zaken/java/org/l2jmobius/gameserver/model/actor/Creature.java
@@ -4372,6 +4372,13 @@ public abstract class Creature extends WorldObject implements ISkillsHolder, IDe
 		
 		getAI().clientStartAutoAttack();
 		
+		// ImmobileDamageBonus and ImmobileDamageResist effect bonuses.
+		if (target.isImmobilized())
+		{
+			damage *= _stat.getValue(Stat.IMMOBILE_DAMAGE_BONUS, 1);
+			damage /= target.getStat().getValue(Stat.IMMOBILE_DAMAGE_RESIST, 1);
+		}
+		
 		if (!reflect && !isDOT)
 		{
 			// RearDamage effect bonus.
diff --git a/L2J_Mobius_Classic_2.1_Zaken/java/org/l2jmobius/gameserver/model/stats/Stat.java b/L2J_Mobius_Classic_2.1_Zaken/java/org/l2jmobius/gameserver/model/stats/Stat.java
index b04bcf1c3f..d26237d3ab 100644
--- a/L2J_Mobius_Classic_2.1_Zaken/java/org/l2jmobius/gameserver/model/stats/Stat.java
+++ b/L2J_Mobius_Classic_2.1_Zaken/java/org/l2jmobius/gameserver/model/stats/Stat.java
@@ -19,7 +19,6 @@ package org.l2jmobius.gameserver.model.stats;
 import java.util.NoSuchElementException;
 import java.util.OptionalDouble;
 import java.util.function.DoubleBinaryOperator;
-import java.util.logging.Logger;
 
 import org.l2jmobius.gameserver.enums.AttributeType;
 import org.l2jmobius.gameserver.model.actor.Creature;
@@ -279,9 +278,11 @@ public enum Stat
 	STAT_BONUS_SPEED("statSpeed"),
 	SHOTS_BONUS("shotBonus", new ShotsBonusFinalizer()),
 	WORLD_CHAT_POINTS("worldChatPoints"),
-	ATTACK_DAMAGE("attackDamage");
+	ATTACK_DAMAGE("attackDamage"),
+	
+	IMMOBILE_DAMAGE_BONUS("immobileBonus"),
+	IMMOBILE_DAMAGE_RESIST("immobileResist");
 	
-	static final Logger LOGGER = Logger.getLogger(Stat.class.getName());
 	public static final int NUM_STATS = values().length;
 	
 	private final String _value;
diff --git a/L2J_Mobius_Classic_2.2_Antharas/dist/game/data/scripts/handlers/EffectMasterHandler.java b/L2J_Mobius_Classic_2.2_Antharas/dist/game/data/scripts/handlers/EffectMasterHandler.java
index 8632cc0c97..d7674d8cf3 100644
--- a/L2J_Mobius_Classic_2.2_Antharas/dist/game/data/scripts/handlers/EffectMasterHandler.java
+++ b/L2J_Mobius_Classic_2.2_Antharas/dist/game/data/scripts/handlers/EffectMasterHandler.java
@@ -177,6 +177,8 @@ public class EffectMasterHandler
 		EffectHandler.getInstance().registerHandler("HpRegen", HpRegen::new);
 		EffectHandler.getInstance().registerHandler("HpToOwner", HpToOwner::new);
 		EffectHandler.getInstance().registerHandler("IgnoreDeath", IgnoreDeath::new);
+		EffectHandler.getInstance().registerHandler("ImmobileDamageBonus", ImmobileDamageBonus::new);
+		EffectHandler.getInstance().registerHandler("ImmobileDamageResist", ImmobileDamageResist::new);
 		EffectHandler.getInstance().registerHandler("ImmobilePetBuff", ImmobilePetBuff::new);
 		EffectHandler.getInstance().registerHandler("InstantKillResist", InstantKillResist::new);
 		EffectHandler.getInstance().registerHandler("JewelSlot", JewelSlot::new);
diff --git a/L2J_Mobius_Classic_2.2_Antharas/dist/game/data/scripts/handlers/effecthandlers/ImmobileDamageBonus.java b/L2J_Mobius_Classic_2.2_Antharas/dist/game/data/scripts/handlers/effecthandlers/ImmobileDamageBonus.java
new file mode 100644
index 0000000000..f124e67e2d
--- /dev/null
+++ b/L2J_Mobius_Classic_2.2_Antharas/dist/game/data/scripts/handlers/effecthandlers/ImmobileDamageBonus.java
@@ -0,0 +1,32 @@
+/*
+ * 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;
+
+/**
+ * Bonus damage to immobile targets.
+ * @author Mobius
+ */
+public class ImmobileDamageBonus extends AbstractStatPercentEffect
+{
+	public ImmobileDamageBonus(StatSet params)
+	{
+		super(params, Stat.IMMOBILE_DAMAGE_BONUS);
+	}
+}
diff --git a/L2J_Mobius_Classic_2.2_Antharas/dist/game/data/scripts/handlers/effecthandlers/ImmobileDamageResist.java b/L2J_Mobius_Classic_2.2_Antharas/dist/game/data/scripts/handlers/effecthandlers/ImmobileDamageResist.java
new file mode 100644
index 0000000000..5a14501280
--- /dev/null
+++ b/L2J_Mobius_Classic_2.2_Antharas/dist/game/data/scripts/handlers/effecthandlers/ImmobileDamageResist.java
@@ -0,0 +1,32 @@
+/*
+ * 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;
+
+/**
+ * Resist damage while immobile.
+ * @author Mobius
+ */
+public class ImmobileDamageResist extends AbstractStatPercentEffect
+{
+	public ImmobileDamageResist(StatSet params)
+	{
+		super(params, Stat.IMMOBILE_DAMAGE_RESIST);
+	}
+}
diff --git a/L2J_Mobius_Classic_2.2_Antharas/dist/game/data/stats/skills/documentation.txt b/L2J_Mobius_Classic_2.2_Antharas/dist/game/data/stats/skills/documentation.txt
index ab9d3b4df4..b1e81daaf4 100644
--- a/L2J_Mobius_Classic_2.2_Antharas/dist/game/data/stats/skills/documentation.txt
+++ b/L2J_Mobius_Classic_2.2_Antharas/dist/game/data/stats/skills/documentation.txt
@@ -148,7 +148,9 @@ Hp: Increases current HP by a static value.
 HpRegen: HP Regeneration stat.
 HpToOwner: DOT effect that absorbs HP over time.
 IgnoreDeath: Become undying. Hp cannot decrease below 1.
-ImmobilePetBuff: Causes your pet to become immobolized.
+ImmobileDamageBonus: Bonus damage to immobile targets. (l2jmobius)
+ImmobileDamageResist: Resist damage while immobile. (l2jmobius)
+ImmobilePetBuff: Causes your pet to become immobilized.
 InstantKillResist: Resist against Lethal strike.
 KarmaCount: Sets current Karma.
 KnockBack: Knocks back or knocks down target.
diff --git a/L2J_Mobius_Classic_2.2_Antharas/java/org/l2jmobius/gameserver/model/actor/Creature.java b/L2J_Mobius_Classic_2.2_Antharas/java/org/l2jmobius/gameserver/model/actor/Creature.java
index 7180587407..bf900b7b38 100644
--- a/L2J_Mobius_Classic_2.2_Antharas/java/org/l2jmobius/gameserver/model/actor/Creature.java
+++ b/L2J_Mobius_Classic_2.2_Antharas/java/org/l2jmobius/gameserver/model/actor/Creature.java
@@ -4372,6 +4372,13 @@ public abstract class Creature extends WorldObject implements ISkillsHolder, IDe
 		
 		getAI().clientStartAutoAttack();
 		
+		// ImmobileDamageBonus and ImmobileDamageResist effect bonuses.
+		if (target.isImmobilized())
+		{
+			damage *= _stat.getValue(Stat.IMMOBILE_DAMAGE_BONUS, 1);
+			damage /= target.getStat().getValue(Stat.IMMOBILE_DAMAGE_RESIST, 1);
+		}
+		
 		if (!reflect && !isDOT)
 		{
 			// RearDamage effect bonus.
diff --git a/L2J_Mobius_Classic_2.2_Antharas/java/org/l2jmobius/gameserver/model/stats/Stat.java b/L2J_Mobius_Classic_2.2_Antharas/java/org/l2jmobius/gameserver/model/stats/Stat.java
index 8a96395583..f08d1b6c00 100644
--- a/L2J_Mobius_Classic_2.2_Antharas/java/org/l2jmobius/gameserver/model/stats/Stat.java
+++ b/L2J_Mobius_Classic_2.2_Antharas/java/org/l2jmobius/gameserver/model/stats/Stat.java
@@ -19,7 +19,6 @@ package org.l2jmobius.gameserver.model.stats;
 import java.util.NoSuchElementException;
 import java.util.OptionalDouble;
 import java.util.function.DoubleBinaryOperator;
-import java.util.logging.Logger;
 
 import org.l2jmobius.gameserver.enums.AttributeType;
 import org.l2jmobius.gameserver.model.actor.Creature;
@@ -284,9 +283,11 @@ public enum Stat
 	STAT_BONUS_SPEED("statSpeed"),
 	SHOTS_BONUS("shotBonus", new ShotsBonusFinalizer()),
 	WORLD_CHAT_POINTS("worldChatPoints"),
-	ATTACK_DAMAGE("attackDamage");
+	ATTACK_DAMAGE("attackDamage"),
+	
+	IMMOBILE_DAMAGE_BONUS("immobileBonus"),
+	IMMOBILE_DAMAGE_RESIST("immobileResist");
 	
-	static final Logger LOGGER = Logger.getLogger(Stat.class.getName());
 	public static final int NUM_STATS = values().length;
 	
 	private final String _value;
diff --git a/L2J_Mobius_Classic_2.3_SevenSigns/dist/game/data/scripts/handlers/EffectMasterHandler.java b/L2J_Mobius_Classic_2.3_SevenSigns/dist/game/data/scripts/handlers/EffectMasterHandler.java
index 2bcdbb3bbf..bf09ba570e 100644
--- a/L2J_Mobius_Classic_2.3_SevenSigns/dist/game/data/scripts/handlers/EffectMasterHandler.java
+++ b/L2J_Mobius_Classic_2.3_SevenSigns/dist/game/data/scripts/handlers/EffectMasterHandler.java
@@ -180,6 +180,8 @@ public class EffectMasterHandler
 		EffectHandler.getInstance().registerHandler("HpRegen", HpRegen::new);
 		EffectHandler.getInstance().registerHandler("HpToOwner", HpToOwner::new);
 		EffectHandler.getInstance().registerHandler("IgnoreDeath", IgnoreDeath::new);
+		EffectHandler.getInstance().registerHandler("ImmobileDamageBonus", ImmobileDamageBonus::new);
+		EffectHandler.getInstance().registerHandler("ImmobileDamageResist", ImmobileDamageResist::new);
 		EffectHandler.getInstance().registerHandler("ImmobilePetBuff", ImmobilePetBuff::new);
 		EffectHandler.getInstance().registerHandler("InstantKillResist", InstantKillResist::new);
 		EffectHandler.getInstance().registerHandler("JewelSlot", JewelSlot::new);
diff --git a/L2J_Mobius_Classic_2.3_SevenSigns/dist/game/data/scripts/handlers/effecthandlers/ImmobileDamageBonus.java b/L2J_Mobius_Classic_2.3_SevenSigns/dist/game/data/scripts/handlers/effecthandlers/ImmobileDamageBonus.java
new file mode 100644
index 0000000000..f124e67e2d
--- /dev/null
+++ b/L2J_Mobius_Classic_2.3_SevenSigns/dist/game/data/scripts/handlers/effecthandlers/ImmobileDamageBonus.java
@@ -0,0 +1,32 @@
+/*
+ * 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;
+
+/**
+ * Bonus damage to immobile targets.
+ * @author Mobius
+ */
+public class ImmobileDamageBonus extends AbstractStatPercentEffect
+{
+	public ImmobileDamageBonus(StatSet params)
+	{
+		super(params, Stat.IMMOBILE_DAMAGE_BONUS);
+	}
+}
diff --git a/L2J_Mobius_Classic_2.3_SevenSigns/dist/game/data/scripts/handlers/effecthandlers/ImmobileDamageResist.java b/L2J_Mobius_Classic_2.3_SevenSigns/dist/game/data/scripts/handlers/effecthandlers/ImmobileDamageResist.java
new file mode 100644
index 0000000000..5a14501280
--- /dev/null
+++ b/L2J_Mobius_Classic_2.3_SevenSigns/dist/game/data/scripts/handlers/effecthandlers/ImmobileDamageResist.java
@@ -0,0 +1,32 @@
+/*
+ * 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;
+
+/**
+ * Resist damage while immobile.
+ * @author Mobius
+ */
+public class ImmobileDamageResist extends AbstractStatPercentEffect
+{
+	public ImmobileDamageResist(StatSet params)
+	{
+		super(params, Stat.IMMOBILE_DAMAGE_RESIST);
+	}
+}
diff --git a/L2J_Mobius_Classic_2.3_SevenSigns/dist/game/data/stats/skills/documentation.txt b/L2J_Mobius_Classic_2.3_SevenSigns/dist/game/data/stats/skills/documentation.txt
index e64cd31365..be99e0ea9b 100644
--- a/L2J_Mobius_Classic_2.3_SevenSigns/dist/game/data/stats/skills/documentation.txt
+++ b/L2J_Mobius_Classic_2.3_SevenSigns/dist/game/data/stats/skills/documentation.txt
@@ -151,7 +151,9 @@ Hp: Increases current HP by a static value.
 HpRegen: HP Regeneration stat.
 HpToOwner: DOT effect that absorbs HP over time.
 IgnoreDeath: Become undying. Hp cannot decrease below 1.
-ImmobilePetBuff: Causes your pet to become immobolized.
+ImmobileDamageBonus: Bonus damage to immobile targets. (l2jmobius)
+ImmobileDamageResist: Resist damage while immobile. (l2jmobius)
+ImmobilePetBuff: Causes your pet to become immobilized.
 InstantKillResist: Resist against Lethal strike.
 KarmaCount: Sets current Karma.
 KnockBack: Knocks back or knocks down target.
diff --git a/L2J_Mobius_Classic_2.3_SevenSigns/java/org/l2jmobius/gameserver/model/actor/Creature.java b/L2J_Mobius_Classic_2.3_SevenSigns/java/org/l2jmobius/gameserver/model/actor/Creature.java
index 027d4cc782..7675a63e88 100644
--- a/L2J_Mobius_Classic_2.3_SevenSigns/java/org/l2jmobius/gameserver/model/actor/Creature.java
+++ b/L2J_Mobius_Classic_2.3_SevenSigns/java/org/l2jmobius/gameserver/model/actor/Creature.java
@@ -4385,6 +4385,13 @@ public abstract class Creature extends WorldObject implements ISkillsHolder, IDe
 		
 		getAI().clientStartAutoAttack();
 		
+		// ImmobileDamageBonus and ImmobileDamageResist effect bonuses.
+		if (target.isImmobilized())
+		{
+			damage *= _stat.getValue(Stat.IMMOBILE_DAMAGE_BONUS, 1);
+			damage /= target.getStat().getValue(Stat.IMMOBILE_DAMAGE_RESIST, 1);
+		}
+		
 		if (!reflect && !isDOT)
 		{
 			// RearDamage effect bonus.
diff --git a/L2J_Mobius_Classic_2.3_SevenSigns/java/org/l2jmobius/gameserver/model/stats/Stat.java b/L2J_Mobius_Classic_2.3_SevenSigns/java/org/l2jmobius/gameserver/model/stats/Stat.java
index f942aa80e2..eab4fcdeef 100644
--- a/L2J_Mobius_Classic_2.3_SevenSigns/java/org/l2jmobius/gameserver/model/stats/Stat.java
+++ b/L2J_Mobius_Classic_2.3_SevenSigns/java/org/l2jmobius/gameserver/model/stats/Stat.java
@@ -19,7 +19,6 @@ package org.l2jmobius.gameserver.model.stats;
 import java.util.NoSuchElementException;
 import java.util.OptionalDouble;
 import java.util.function.DoubleBinaryOperator;
-import java.util.logging.Logger;
 
 import org.l2jmobius.gameserver.enums.AttributeType;
 import org.l2jmobius.gameserver.model.actor.Creature;
@@ -300,9 +299,11 @@ public enum Stat
 	STAT_BONUS_SPEED("statSpeed"),
 	SHOTS_BONUS("shotBonus", new ShotsBonusFinalizer()),
 	WORLD_CHAT_POINTS("worldChatPoints"),
-	ATTACK_DAMAGE("attackDamage");
+	ATTACK_DAMAGE("attackDamage"),
+	
+	IMMOBILE_DAMAGE_BONUS("immobileBonus"),
+	IMMOBILE_DAMAGE_RESIST("immobileResist");
 	
-	static final Logger LOGGER = Logger.getLogger(Stat.class.getName());
 	public static final int NUM_STATS = values().length;
 	
 	private final String _value;
diff --git a/L2J_Mobius_Classic_2.4_SecretOfEmpire/dist/game/data/scripts/handlers/EffectMasterHandler.java b/L2J_Mobius_Classic_2.4_SecretOfEmpire/dist/game/data/scripts/handlers/EffectMasterHandler.java
index 2bcdbb3bbf..bf09ba570e 100644
--- a/L2J_Mobius_Classic_2.4_SecretOfEmpire/dist/game/data/scripts/handlers/EffectMasterHandler.java
+++ b/L2J_Mobius_Classic_2.4_SecretOfEmpire/dist/game/data/scripts/handlers/EffectMasterHandler.java
@@ -180,6 +180,8 @@ public class EffectMasterHandler
 		EffectHandler.getInstance().registerHandler("HpRegen", HpRegen::new);
 		EffectHandler.getInstance().registerHandler("HpToOwner", HpToOwner::new);
 		EffectHandler.getInstance().registerHandler("IgnoreDeath", IgnoreDeath::new);
+		EffectHandler.getInstance().registerHandler("ImmobileDamageBonus", ImmobileDamageBonus::new);
+		EffectHandler.getInstance().registerHandler("ImmobileDamageResist", ImmobileDamageResist::new);
 		EffectHandler.getInstance().registerHandler("ImmobilePetBuff", ImmobilePetBuff::new);
 		EffectHandler.getInstance().registerHandler("InstantKillResist", InstantKillResist::new);
 		EffectHandler.getInstance().registerHandler("JewelSlot", JewelSlot::new);
diff --git a/L2J_Mobius_Classic_2.4_SecretOfEmpire/dist/game/data/scripts/handlers/effecthandlers/ImmobileDamageBonus.java b/L2J_Mobius_Classic_2.4_SecretOfEmpire/dist/game/data/scripts/handlers/effecthandlers/ImmobileDamageBonus.java
new file mode 100644
index 0000000000..f124e67e2d
--- /dev/null
+++ b/L2J_Mobius_Classic_2.4_SecretOfEmpire/dist/game/data/scripts/handlers/effecthandlers/ImmobileDamageBonus.java
@@ -0,0 +1,32 @@
+/*
+ * 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;
+
+/**
+ * Bonus damage to immobile targets.
+ * @author Mobius
+ */
+public class ImmobileDamageBonus extends AbstractStatPercentEffect
+{
+	public ImmobileDamageBonus(StatSet params)
+	{
+		super(params, Stat.IMMOBILE_DAMAGE_BONUS);
+	}
+}
diff --git a/L2J_Mobius_Classic_2.4_SecretOfEmpire/dist/game/data/scripts/handlers/effecthandlers/ImmobileDamageResist.java b/L2J_Mobius_Classic_2.4_SecretOfEmpire/dist/game/data/scripts/handlers/effecthandlers/ImmobileDamageResist.java
new file mode 100644
index 0000000000..5a14501280
--- /dev/null
+++ b/L2J_Mobius_Classic_2.4_SecretOfEmpire/dist/game/data/scripts/handlers/effecthandlers/ImmobileDamageResist.java
@@ -0,0 +1,32 @@
+/*
+ * 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;
+
+/**
+ * Resist damage while immobile.
+ * @author Mobius
+ */
+public class ImmobileDamageResist extends AbstractStatPercentEffect
+{
+	public ImmobileDamageResist(StatSet params)
+	{
+		super(params, Stat.IMMOBILE_DAMAGE_RESIST);
+	}
+}
diff --git a/L2J_Mobius_Classic_2.4_SecretOfEmpire/dist/game/data/stats/skills/documentation.txt b/L2J_Mobius_Classic_2.4_SecretOfEmpire/dist/game/data/stats/skills/documentation.txt
index e64cd31365..be99e0ea9b 100644
--- a/L2J_Mobius_Classic_2.4_SecretOfEmpire/dist/game/data/stats/skills/documentation.txt
+++ b/L2J_Mobius_Classic_2.4_SecretOfEmpire/dist/game/data/stats/skills/documentation.txt
@@ -151,7 +151,9 @@ Hp: Increases current HP by a static value.
 HpRegen: HP Regeneration stat.
 HpToOwner: DOT effect that absorbs HP over time.
 IgnoreDeath: Become undying. Hp cannot decrease below 1.
-ImmobilePetBuff: Causes your pet to become immobolized.
+ImmobileDamageBonus: Bonus damage to immobile targets. (l2jmobius)
+ImmobileDamageResist: Resist damage while immobile. (l2jmobius)
+ImmobilePetBuff: Causes your pet to become immobilized.
 InstantKillResist: Resist against Lethal strike.
 KarmaCount: Sets current Karma.
 KnockBack: Knocks back or knocks down target.
diff --git a/L2J_Mobius_Classic_2.4_SecretOfEmpire/java/org/l2jmobius/gameserver/model/actor/Creature.java b/L2J_Mobius_Classic_2.4_SecretOfEmpire/java/org/l2jmobius/gameserver/model/actor/Creature.java
index 027d4cc782..7675a63e88 100644
--- a/L2J_Mobius_Classic_2.4_SecretOfEmpire/java/org/l2jmobius/gameserver/model/actor/Creature.java
+++ b/L2J_Mobius_Classic_2.4_SecretOfEmpire/java/org/l2jmobius/gameserver/model/actor/Creature.java
@@ -4385,6 +4385,13 @@ public abstract class Creature extends WorldObject implements ISkillsHolder, IDe
 		
 		getAI().clientStartAutoAttack();
 		
+		// ImmobileDamageBonus and ImmobileDamageResist effect bonuses.
+		if (target.isImmobilized())
+		{
+			damage *= _stat.getValue(Stat.IMMOBILE_DAMAGE_BONUS, 1);
+			damage /= target.getStat().getValue(Stat.IMMOBILE_DAMAGE_RESIST, 1);
+		}
+		
 		if (!reflect && !isDOT)
 		{
 			// RearDamage effect bonus.
diff --git a/L2J_Mobius_Classic_2.4_SecretOfEmpire/java/org/l2jmobius/gameserver/model/stats/Stat.java b/L2J_Mobius_Classic_2.4_SecretOfEmpire/java/org/l2jmobius/gameserver/model/stats/Stat.java
index f942aa80e2..eab4fcdeef 100644
--- a/L2J_Mobius_Classic_2.4_SecretOfEmpire/java/org/l2jmobius/gameserver/model/stats/Stat.java
+++ b/L2J_Mobius_Classic_2.4_SecretOfEmpire/java/org/l2jmobius/gameserver/model/stats/Stat.java
@@ -19,7 +19,6 @@ package org.l2jmobius.gameserver.model.stats;
 import java.util.NoSuchElementException;
 import java.util.OptionalDouble;
 import java.util.function.DoubleBinaryOperator;
-import java.util.logging.Logger;
 
 import org.l2jmobius.gameserver.enums.AttributeType;
 import org.l2jmobius.gameserver.model.actor.Creature;
@@ -300,9 +299,11 @@ public enum Stat
 	STAT_BONUS_SPEED("statSpeed"),
 	SHOTS_BONUS("shotBonus", new ShotsBonusFinalizer()),
 	WORLD_CHAT_POINTS("worldChatPoints"),
-	ATTACK_DAMAGE("attackDamage");
+	ATTACK_DAMAGE("attackDamage"),
+	
+	IMMOBILE_DAMAGE_BONUS("immobileBonus"),
+	IMMOBILE_DAMAGE_RESIST("immobileResist");
 	
-	static final Logger LOGGER = Logger.getLogger(Stat.class.getName());
 	public static final int NUM_STATS = values().length;
 	
 	private final String _value;
diff --git a/L2J_Mobius_Classic_3.0_TheKamael/dist/game/data/scripts/handlers/EffectMasterHandler.java b/L2J_Mobius_Classic_3.0_TheKamael/dist/game/data/scripts/handlers/EffectMasterHandler.java
index 5b695a9dd2..b077073c71 100644
--- a/L2J_Mobius_Classic_3.0_TheKamael/dist/game/data/scripts/handlers/EffectMasterHandler.java
+++ b/L2J_Mobius_Classic_3.0_TheKamael/dist/game/data/scripts/handlers/EffectMasterHandler.java
@@ -180,6 +180,8 @@ public class EffectMasterHandler
 		EffectHandler.getInstance().registerHandler("HpRegen", HpRegen::new);
 		EffectHandler.getInstance().registerHandler("HpToOwner", HpToOwner::new);
 		EffectHandler.getInstance().registerHandler("IgnoreDeath", IgnoreDeath::new);
+		EffectHandler.getInstance().registerHandler("ImmobileDamageBonus", ImmobileDamageBonus::new);
+		EffectHandler.getInstance().registerHandler("ImmobileDamageResist", ImmobileDamageResist::new);
 		EffectHandler.getInstance().registerHandler("ImmobilePetBuff", ImmobilePetBuff::new);
 		EffectHandler.getInstance().registerHandler("InstantKillResist", InstantKillResist::new);
 		EffectHandler.getInstance().registerHandler("JewelSlot", JewelSlot::new);
diff --git a/L2J_Mobius_Classic_3.0_TheKamael/dist/game/data/scripts/handlers/effecthandlers/ImmobileDamageBonus.java b/L2J_Mobius_Classic_3.0_TheKamael/dist/game/data/scripts/handlers/effecthandlers/ImmobileDamageBonus.java
new file mode 100644
index 0000000000..f124e67e2d
--- /dev/null
+++ b/L2J_Mobius_Classic_3.0_TheKamael/dist/game/data/scripts/handlers/effecthandlers/ImmobileDamageBonus.java
@@ -0,0 +1,32 @@
+/*
+ * 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;
+
+/**
+ * Bonus damage to immobile targets.
+ * @author Mobius
+ */
+public class ImmobileDamageBonus extends AbstractStatPercentEffect
+{
+	public ImmobileDamageBonus(StatSet params)
+	{
+		super(params, Stat.IMMOBILE_DAMAGE_BONUS);
+	}
+}
diff --git a/L2J_Mobius_Classic_3.0_TheKamael/dist/game/data/scripts/handlers/effecthandlers/ImmobileDamageResist.java b/L2J_Mobius_Classic_3.0_TheKamael/dist/game/data/scripts/handlers/effecthandlers/ImmobileDamageResist.java
new file mode 100644
index 0000000000..5a14501280
--- /dev/null
+++ b/L2J_Mobius_Classic_3.0_TheKamael/dist/game/data/scripts/handlers/effecthandlers/ImmobileDamageResist.java
@@ -0,0 +1,32 @@
+/*
+ * 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;
+
+/**
+ * Resist damage while immobile.
+ * @author Mobius
+ */
+public class ImmobileDamageResist extends AbstractStatPercentEffect
+{
+	public ImmobileDamageResist(StatSet params)
+	{
+		super(params, Stat.IMMOBILE_DAMAGE_RESIST);
+	}
+}
diff --git a/L2J_Mobius_Classic_3.0_TheKamael/dist/game/data/stats/skills/documentation.txt b/L2J_Mobius_Classic_3.0_TheKamael/dist/game/data/stats/skills/documentation.txt
index 2d317b82a4..ec61c8d9e4 100644
--- a/L2J_Mobius_Classic_3.0_TheKamael/dist/game/data/stats/skills/documentation.txt
+++ b/L2J_Mobius_Classic_3.0_TheKamael/dist/game/data/stats/skills/documentation.txt
@@ -151,7 +151,9 @@ Hp: Increases current HP by a static value.
 HpRegen: HP Regeneration stat.
 HpToOwner: DOT effect that absorbs HP over time.
 IgnoreDeath: Become undying. Hp cannot decrease below 1.
-ImmobilePetBuff: Causes your pet to become immobolized.
+ImmobileDamageBonus: Bonus damage to immobile targets. (l2jmobius)
+ImmobileDamageResist: Resist damage while immobile. (l2jmobius)
+ImmobilePetBuff: Causes your pet to become immobilized.
 InstantKillResist: Resist against Lethal strike.
 KarmaCount: Sets current Karma.
 KnockBack: Knocks back or knocks down target.
diff --git a/L2J_Mobius_Classic_3.0_TheKamael/java/org/l2jmobius/gameserver/model/actor/Creature.java b/L2J_Mobius_Classic_3.0_TheKamael/java/org/l2jmobius/gameserver/model/actor/Creature.java
index e9bdc9fd4a..2cf891ab3f 100644
--- a/L2J_Mobius_Classic_3.0_TheKamael/java/org/l2jmobius/gameserver/model/actor/Creature.java
+++ b/L2J_Mobius_Classic_3.0_TheKamael/java/org/l2jmobius/gameserver/model/actor/Creature.java
@@ -4384,6 +4384,13 @@ public abstract class Creature extends WorldObject implements ISkillsHolder, IDe
 		
 		getAI().clientStartAutoAttack();
 		
+		// ImmobileDamageBonus and ImmobileDamageResist effect bonuses.
+		if (target.isImmobilized())
+		{
+			damage *= _stat.getValue(Stat.IMMOBILE_DAMAGE_BONUS, 1);
+			damage /= target.getStat().getValue(Stat.IMMOBILE_DAMAGE_RESIST, 1);
+		}
+		
 		if (!reflect && !isDOT)
 		{
 			// RearDamage effect bonus.
diff --git a/L2J_Mobius_Classic_3.0_TheKamael/java/org/l2jmobius/gameserver/model/stats/Stat.java b/L2J_Mobius_Classic_3.0_TheKamael/java/org/l2jmobius/gameserver/model/stats/Stat.java
index 91b4f12291..cd45d6aa15 100644
--- a/L2J_Mobius_Classic_3.0_TheKamael/java/org/l2jmobius/gameserver/model/stats/Stat.java
+++ b/L2J_Mobius_Classic_3.0_TheKamael/java/org/l2jmobius/gameserver/model/stats/Stat.java
@@ -19,7 +19,6 @@ package org.l2jmobius.gameserver.model.stats;
 import java.util.NoSuchElementException;
 import java.util.OptionalDouble;
 import java.util.function.DoubleBinaryOperator;
-import java.util.logging.Logger;
 
 import org.l2jmobius.gameserver.enums.AttributeType;
 import org.l2jmobius.gameserver.model.actor.Creature;
@@ -302,9 +301,11 @@ public enum Stat
 	STAT_BONUS_SPEED("statSpeed"),
 	SHOTS_BONUS("shotBonus", new ShotsBonusFinalizer()),
 	WORLD_CHAT_POINTS("worldChatPoints"),
-	ATTACK_DAMAGE("attackDamage");
+	ATTACK_DAMAGE("attackDamage"),
+	
+	IMMOBILE_DAMAGE_BONUS("immobileBonus"),
+	IMMOBILE_DAMAGE_RESIST("immobileResist");
 	
-	static final Logger LOGGER = Logger.getLogger(Stat.class.getName());
 	public static final int NUM_STATS = values().length;
 	
 	private final String _value;
diff --git a/L2J_Mobius_Classic_Interlude/dist/game/data/scripts/handlers/EffectMasterHandler.java b/L2J_Mobius_Classic_Interlude/dist/game/data/scripts/handlers/EffectMasterHandler.java
index eeee25f75d..1aeadb9bef 100644
--- a/L2J_Mobius_Classic_Interlude/dist/game/data/scripts/handlers/EffectMasterHandler.java
+++ b/L2J_Mobius_Classic_Interlude/dist/game/data/scripts/handlers/EffectMasterHandler.java
@@ -178,6 +178,8 @@ public class EffectMasterHandler
 		EffectHandler.getInstance().registerHandler("HpRegen", HpRegen::new);
 		EffectHandler.getInstance().registerHandler("HpToOwner", HpToOwner::new);
 		EffectHandler.getInstance().registerHandler("IgnoreDeath", IgnoreDeath::new);
+		EffectHandler.getInstance().registerHandler("ImmobileDamageBonus", ImmobileDamageBonus::new);
+		EffectHandler.getInstance().registerHandler("ImmobileDamageResist", ImmobileDamageResist::new);
 		EffectHandler.getInstance().registerHandler("ImmobilePetBuff", ImmobilePetBuff::new);
 		EffectHandler.getInstance().registerHandler("InstantKillResist", InstantKillResist::new);
 		EffectHandler.getInstance().registerHandler("JewelSlot", JewelSlot::new);
diff --git a/L2J_Mobius_Classic_Interlude/dist/game/data/scripts/handlers/effecthandlers/ImmobileDamageBonus.java b/L2J_Mobius_Classic_Interlude/dist/game/data/scripts/handlers/effecthandlers/ImmobileDamageBonus.java
new file mode 100644
index 0000000000..f124e67e2d
--- /dev/null
+++ b/L2J_Mobius_Classic_Interlude/dist/game/data/scripts/handlers/effecthandlers/ImmobileDamageBonus.java
@@ -0,0 +1,32 @@
+/*
+ * 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;
+
+/**
+ * Bonus damage to immobile targets.
+ * @author Mobius
+ */
+public class ImmobileDamageBonus extends AbstractStatPercentEffect
+{
+	public ImmobileDamageBonus(StatSet params)
+	{
+		super(params, Stat.IMMOBILE_DAMAGE_BONUS);
+	}
+}
diff --git a/L2J_Mobius_Classic_Interlude/dist/game/data/scripts/handlers/effecthandlers/ImmobileDamageResist.java b/L2J_Mobius_Classic_Interlude/dist/game/data/scripts/handlers/effecthandlers/ImmobileDamageResist.java
new file mode 100644
index 0000000000..5a14501280
--- /dev/null
+++ b/L2J_Mobius_Classic_Interlude/dist/game/data/scripts/handlers/effecthandlers/ImmobileDamageResist.java
@@ -0,0 +1,32 @@
+/*
+ * 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;
+
+/**
+ * Resist damage while immobile.
+ * @author Mobius
+ */
+public class ImmobileDamageResist extends AbstractStatPercentEffect
+{
+	public ImmobileDamageResist(StatSet params)
+	{
+		super(params, Stat.IMMOBILE_DAMAGE_RESIST);
+	}
+}
diff --git a/L2J_Mobius_Classic_Interlude/dist/game/data/stats/skills/documentation.txt b/L2J_Mobius_Classic_Interlude/dist/game/data/stats/skills/documentation.txt
index 7ca4d4eac3..9eebcee3f8 100644
--- a/L2J_Mobius_Classic_Interlude/dist/game/data/stats/skills/documentation.txt
+++ b/L2J_Mobius_Classic_Interlude/dist/game/data/stats/skills/documentation.txt
@@ -149,7 +149,9 @@ Hp: Increases current HP by a static value.
 HpRegen: HP Regeneration stat.
 HpToOwner: DOT effect that absorbs HP over time.
 IgnoreDeath: Become undying. Hp cannot decrease below 1.
-ImmobilePetBuff: Causes your pet to become immobolized.
+ImmobileDamageBonus: Bonus damage to immobile targets. (l2jmobius)
+ImmobileDamageResist: Resist damage while immobile. (l2jmobius)
+ImmobilePetBuff: Causes your pet to become immobilized.
 InstantKillResist: Resist against Lethal strike.
 KarmaCount: Sets current Karma.
 KnockBack: Knocks back or knocks down target.
diff --git a/L2J_Mobius_Classic_Interlude/java/org/l2jmobius/gameserver/model/actor/Creature.java b/L2J_Mobius_Classic_Interlude/java/org/l2jmobius/gameserver/model/actor/Creature.java
index 4d841a5fe9..8e1d560346 100644
--- a/L2J_Mobius_Classic_Interlude/java/org/l2jmobius/gameserver/model/actor/Creature.java
+++ b/L2J_Mobius_Classic_Interlude/java/org/l2jmobius/gameserver/model/actor/Creature.java
@@ -4372,6 +4372,13 @@ public abstract class Creature extends WorldObject implements ISkillsHolder, IDe
 		
 		getAI().clientStartAutoAttack();
 		
+		// ImmobileDamageBonus and ImmobileDamageResist effect bonuses.
+		if (target.isImmobilized())
+		{
+			damage *= _stat.getValue(Stat.IMMOBILE_DAMAGE_BONUS, 1);
+			damage /= target.getStat().getValue(Stat.IMMOBILE_DAMAGE_RESIST, 1);
+		}
+		
 		if (!reflect && !isDOT)
 		{
 			// RearDamage effect bonus.
diff --git a/L2J_Mobius_Classic_Interlude/java/org/l2jmobius/gameserver/model/stats/Stat.java b/L2J_Mobius_Classic_Interlude/java/org/l2jmobius/gameserver/model/stats/Stat.java
index 1e2a81e3a4..6bd9bb0c04 100644
--- a/L2J_Mobius_Classic_Interlude/java/org/l2jmobius/gameserver/model/stats/Stat.java
+++ b/L2J_Mobius_Classic_Interlude/java/org/l2jmobius/gameserver/model/stats/Stat.java
@@ -19,7 +19,6 @@ package org.l2jmobius.gameserver.model.stats;
 import java.util.NoSuchElementException;
 import java.util.OptionalDouble;
 import java.util.function.DoubleBinaryOperator;
-import java.util.logging.Logger;
 
 import org.l2jmobius.gameserver.enums.AttributeType;
 import org.l2jmobius.gameserver.model.actor.Creature;
@@ -281,9 +280,11 @@ public enum Stat
 	STAT_BONUS_SPEED("statSpeed"),
 	SHOTS_BONUS("shotBonus", new ShotsBonusFinalizer()),
 	WORLD_CHAT_POINTS("worldChatPoints"),
-	ATTACK_DAMAGE("attackDamage");
+	ATTACK_DAMAGE("attackDamage"),
+	
+	IMMOBILE_DAMAGE_BONUS("immobileBonus"),
+	IMMOBILE_DAMAGE_RESIST("immobileResist");
 	
-	static final Logger LOGGER = Logger.getLogger(Stat.class.getName());
 	public static final int NUM_STATS = values().length;
 	
 	private final String _value;