diff --git a/L2J_Mobius_Essence_5.2_FrostLord/dist/game/data/scripts/handlers/admincommandhandlers/AdminPledge.java b/L2J_Mobius_Essence_5.2_FrostLord/dist/game/data/scripts/handlers/admincommandhandlers/AdminPledge.java
index 3157a9ca32..79d47fcb44 100644
--- a/L2J_Mobius_Essence_5.2_FrostLord/dist/game/data/scripts/handlers/admincommandhandlers/AdminPledge.java
+++ b/L2J_Mobius_Essence_5.2_FrostLord/dist/game/data/scripts/handlers/admincommandhandlers/AdminPledge.java
@@ -21,6 +21,7 @@ import java.util.StringTokenizer;
 import org.l2jmobius.gameserver.data.sql.ClanTable;
 import org.l2jmobius.gameserver.enums.UserInfoType;
 import org.l2jmobius.gameserver.handler.IAdminCommandHandler;
+import org.l2jmobius.gameserver.instancemanager.GlobalVariablesManager;
 import org.l2jmobius.gameserver.model.WorldObject;
 import org.l2jmobius.gameserver.model.actor.instance.PlayerInstance;
 import org.l2jmobius.gameserver.model.clan.Clan;
@@ -196,6 +197,26 @@ public class AdminPledge implements IAdminCommandHandler
 						}
 						break;
 					}
+					case "arena":
+					{
+						if (clan == null)
+						{
+							BuilderUtil.sendSysMessage(activeChar, "Target player has no clan!");
+							break;
+						}
+						
+						try
+						{
+							final int stage = Integer.parseInt(param);
+							GlobalVariablesManager.getInstance().set(GlobalVariablesManager.MONSTER_ARENA_VARIABLE + clan.getId(), stage);
+							BuilderUtil.sendSysMessage(activeChar, "You set " + stage + " Monster Arena stage for clan " + clan.getName() + "");
+						}
+						catch (Exception e)
+						{
+							BuilderUtil.sendSysMessage(activeChar, "Usage: //pledge arena <number>");
+						}
+						break;
+					}
 				}
 				break;
 			}
diff --git a/L2J_Mobius_Essence_5.2_FrostLord/dist/game/data/scripts/instances/MonsterArena/MonsterArena.java b/L2J_Mobius_Essence_5.2_FrostLord/dist/game/data/scripts/instances/MonsterArena/MonsterArena.java
index 50e6b2bb6a..d7817d04f2 100644
--- a/L2J_Mobius_Essence_5.2_FrostLord/dist/game/data/scripts/instances/MonsterArena/MonsterArena.java
+++ b/L2J_Mobius_Essence_5.2_FrostLord/dist/game/data/scripts/instances/MonsterArena/MonsterArena.java
@@ -20,11 +20,21 @@ import java.util.Collection;
 import java.util.concurrent.ConcurrentHashMap;
 
 import org.l2jmobius.commons.threads.ThreadPool;
+import org.l2jmobius.gameserver.data.xml.SkillData;
 import org.l2jmobius.gameserver.enums.ChatType;
 import org.l2jmobius.gameserver.instancemanager.GlobalVariablesManager;
 import org.l2jmobius.gameserver.model.actor.Npc;
 import org.l2jmobius.gameserver.model.actor.instance.PlayerInstance;
+import org.l2jmobius.gameserver.model.clan.Clan;
+import org.l2jmobius.gameserver.model.clan.ClanMember;
+import org.l2jmobius.gameserver.model.events.EventType;
+import org.l2jmobius.gameserver.model.events.ListenerRegisterType;
+import org.l2jmobius.gameserver.model.events.annotations.RegisterEvent;
+import org.l2jmobius.gameserver.model.events.annotations.RegisterType;
+import org.l2jmobius.gameserver.model.events.impl.creature.player.OnPlayerClanLeft;
+import org.l2jmobius.gameserver.model.events.impl.creature.player.OnPlayerLogin;
 import org.l2jmobius.gameserver.model.instancezone.Instance;
+import org.l2jmobius.gameserver.model.skills.Skill;
 import org.l2jmobius.gameserver.network.NpcStringId;
 import org.l2jmobius.gameserver.network.serverpackets.ExSendUIEvent;
 
@@ -32,7 +42,7 @@ import instances.AbstractInstance;
 
 /**
  * @author Mobius
- * @URL https://l2wiki.com/classic/Clan_-_Clan_Arena
+ * @URL https://www.l2central.info/essence/articles/793.html?lang=en
  */
 public class MonsterArena extends AbstractInstance
 {
@@ -62,6 +72,12 @@ public class MonsterArena extends AbstractInstance
 		25811, // Satur
 		25812, // Kosnak
 		25813, // Garaki
+		// TODO: 21-25 bosses
+		// 25834, // Shadai
+		// 25835, // Tyrobait
+		// 25836, // Tier
+		// 25837, // Cherkia
+		// 25838, // Spicula
 	};
 	// Rewards
 	private static final int BATTLE_BOX_1 = 90913;
@@ -71,9 +87,10 @@ public class MonsterArena extends AbstractInstance
 	private static final int VALOR_BOX = 90915;
 	private static final int TICKET_M = 90946;
 	private static final int TICKET_H = 90947;
+	// Skill
+	private static final int CLAN_EXUBERANCE = 1867;
 	// Misc
 	private static final Collection<PlayerInstance> REWARDED_PLAYERS = ConcurrentHashMap.newKeySet();
-	private static final String MONSTER_ARENA_VARIABLE = "MA_C";
 	private static final int TEMPLATE_ID = 192;
 	
 	public MonsterArena()
@@ -151,16 +168,16 @@ public class MonsterArena extends AbstractInstance
 					machine.setScriptValue(player.getClanId());
 					
 					// Initialize progress if it does not exist.
-					if (GlobalVariablesManager.getInstance().getInt(MONSTER_ARENA_VARIABLE + machine.getScriptValue(), -1) == -1)
+					if (GlobalVariablesManager.getInstance().getInt(GlobalVariablesManager.MONSTER_ARENA_VARIABLE + machine.getScriptValue(), -1) == -1)
 					{
-						GlobalVariablesManager.getInstance().set(MONSTER_ARENA_VARIABLE + machine.getScriptValue(), 1);
+						GlobalVariablesManager.getInstance().set(GlobalVariablesManager.MONSTER_ARENA_VARIABLE + machine.getScriptValue(), 1);
 					}
 					
 					// On max progress, set last four bosses.
-					final int progress = GlobalVariablesManager.getInstance().getInt(MONSTER_ARENA_VARIABLE + machine.getScriptValue());
-					if (progress > 17)
+					final int progress = GlobalVariablesManager.getInstance().getInt(GlobalVariablesManager.MONSTER_ARENA_VARIABLE + machine.getScriptValue());
+					if (progress > 17) // TODO: 22 for 25 total bosses.
 					{
-						GlobalVariablesManager.getInstance().set(MONSTER_ARENA_VARIABLE + machine.getScriptValue(), 17);
+						GlobalVariablesManager.getInstance().set(GlobalVariablesManager.MONSTER_ARENA_VARIABLE + machine.getScriptValue(), 17); // TODO: 22 for 25 total bosses.
 					}
 					
 					startQuestTimer("machine_talk", 10000, machine, null);
@@ -196,7 +213,7 @@ public class MonsterArena extends AbstractInstance
 				final Instance world = npc.getInstanceWorld();
 				if (world != null)
 				{
-					world.spawnGroup("boss_" + GlobalVariablesManager.getInstance().getInt(MONSTER_ARENA_VARIABLE + npc.getScriptValue()));
+					world.spawnGroup("boss_" + GlobalVariablesManager.getInstance().getInt(GlobalVariablesManager.MONSTER_ARENA_VARIABLE + npc.getScriptValue()));
 				}
 				break;
 			}
@@ -215,7 +232,7 @@ public class MonsterArena extends AbstractInstance
 					
 					// Mandatory reward.
 					final Npc machine = world.getNpc(MACHINE);
-					final int progress = GlobalVariablesManager.getInstance().getInt(MONSTER_ARENA_VARIABLE + machine.getScriptValue());
+					final int progress = GlobalVariablesManager.getInstance().getInt(GlobalVariablesManager.MONSTER_ARENA_VARIABLE + machine.getScriptValue());
 					if (progress > 16)
 					{
 						giveItems(player, BATTLE_BOX_4, 1);
@@ -288,7 +305,7 @@ public class MonsterArena extends AbstractInstance
 			machine.broadcastSay(ChatType.NPC_GENERAL, NpcStringId.HA_NOT_BAD);
 			
 			// Save progress to global variables.
-			GlobalVariablesManager.getInstance().increaseInt(MONSTER_ARENA_VARIABLE + machine.getScriptValue(), 1);
+			GlobalVariablesManager.getInstance().increaseInt(GlobalVariablesManager.MONSTER_ARENA_VARIABLE + machine.getScriptValue(), 1);
 			
 			// Spawn reward chests.
 			world.spawnGroup("supplies");
@@ -317,6 +334,48 @@ public class MonsterArena extends AbstractInstance
 		return npc.getId() + "-01.htm";
 	}
 	
+	@RegisterEvent(EventType.ON_PLAYER_LOGIN)
+	@RegisterType(ListenerRegisterType.GLOBAL_PLAYERS)
+	public void onPlayerLogin(OnPlayerLogin event)
+	{
+		final PlayerInstance player = event.getPlayer();
+		if (player == null)
+		{
+			return;
+		}
+		
+		final Clan clan = player.getClan();
+		if (clan == null)
+		{
+			// Should never happen.
+			final Skill knownSkill = player.getKnownSkill(CLAN_EXUBERANCE);
+			if (knownSkill != null)
+			{
+				player.removeSkill(knownSkill, true);
+			}
+			return;
+		}
+		
+		final int stage = GlobalVariablesManager.getInstance().getInt(GlobalVariablesManager.MONSTER_ARENA_VARIABLE + clan.getId(), 0);
+		if (stage > 4)
+		{
+			player.addSkill(SkillData.getInstance().getSkill(CLAN_EXUBERANCE, stage / 5), false);
+		}
+	}
+	
+	@RegisterEvent(EventType.ON_PLAYER_CLAN_LEFT)
+	@RegisterType(ListenerRegisterType.GLOBAL_PLAYERS)
+	public void onPlayerClanLeft(OnPlayerClanLeft event)
+	{
+		final ClanMember member = event.getClanMember();
+		if ((member == null) || !member.isOnline())
+		{
+			return;
+		}
+		
+		member.getPlayerInstance().removeSkill(CLAN_EXUBERANCE, true);
+	}
+	
 	public static void main(String[] args)
 	{
 		new MonsterArena();
diff --git a/L2J_Mobius_Essence_5.2_FrostLord/java/org/l2jmobius/gameserver/instancemanager/DailyTaskManager.java b/L2J_Mobius_Essence_5.2_FrostLord/java/org/l2jmobius/gameserver/instancemanager/DailyTaskManager.java
index e0556cb417..2dfc9b6d68 100644
--- a/L2J_Mobius_Essence_5.2_FrostLord/java/org/l2jmobius/gameserver/instancemanager/DailyTaskManager.java
+++ b/L2J_Mobius_Essence_5.2_FrostLord/java/org/l2jmobius/gameserver/instancemanager/DailyTaskManager.java
@@ -83,6 +83,7 @@ public class DailyTaskManager
 		{
 			clanLeaderApply();
 			resetVitalityWeekly();
+			resetMonsterArenaWeekly();
 			resetTimedHuntingZonesWeekly();
 		}
 		else
@@ -219,6 +220,14 @@ public class DailyTaskManager
 		LOGGER.info("Vitality resetted");
 	}
 	
+	private void resetMonsterArenaWeekly()
+	{
+		for (Clan clan : ClanTable.getInstance().getClans())
+		{
+			GlobalVariablesManager.getInstance().remove(GlobalVariablesManager.MONSTER_ARENA_VARIABLE + clan.getId());
+		}
+	}
+	
 	private void resetClanBonus()
 	{
 		ClanTable.getInstance().getClans().forEach(Clan::resetClanBonus);
diff --git a/L2J_Mobius_Essence_5.2_FrostLord/java/org/l2jmobius/gameserver/instancemanager/GlobalVariablesManager.java b/L2J_Mobius_Essence_5.2_FrostLord/java/org/l2jmobius/gameserver/instancemanager/GlobalVariablesManager.java
index 46b6f6940f..c9d23ecc18 100644
--- a/L2J_Mobius_Essence_5.2_FrostLord/java/org/l2jmobius/gameserver/instancemanager/GlobalVariablesManager.java
+++ b/L2J_Mobius_Essence_5.2_FrostLord/java/org/l2jmobius/gameserver/instancemanager/GlobalVariablesManager.java
@@ -42,6 +42,7 @@ public class GlobalVariablesManager extends AbstractVariables
 	private static final String INSERT_QUERY = "INSERT INTO global_variables (var, value) VALUES (?, ?)";
 	
 	// Public variable names
+	public static final String MONSTER_ARENA_VARIABLE = "MA_C";
 	public static final String PURGE_REWARD_TIME = "PURGE_REWARD_TIME";
 	
 	protected GlobalVariablesManager()
diff --git a/L2J_Mobius_Essence_5.2_FrostLord/java/org/l2jmobius/gameserver/network/clientpackets/pledgeV3/RequestExPledgeV3Info.java b/L2J_Mobius_Essence_5.2_FrostLord/java/org/l2jmobius/gameserver/network/clientpackets/pledgeV3/RequestExPledgeV3Info.java
index 41679216dd..0195c7960a 100644
--- a/L2J_Mobius_Essence_5.2_FrostLord/java/org/l2jmobius/gameserver/network/clientpackets/pledgeV3/RequestExPledgeV3Info.java
+++ b/L2J_Mobius_Essence_5.2_FrostLord/java/org/l2jmobius/gameserver/network/clientpackets/pledgeV3/RequestExPledgeV3Info.java
@@ -21,6 +21,7 @@ import org.l2jmobius.gameserver.model.actor.instance.PlayerInstance;
 import org.l2jmobius.gameserver.network.GameClient;
 import org.l2jmobius.gameserver.network.clientpackets.IClientIncomingPacket;
 import org.l2jmobius.gameserver.network.serverpackets.PledgeReceiveWarList;
+import org.l2jmobius.gameserver.network.serverpackets.pledgeV3.ExPledgeClassicRaidInfo;
 import org.l2jmobius.gameserver.network.serverpackets.pledgeV3.ExPledgeV3Info;
 
 /**
@@ -53,5 +54,6 @@ public class RequestExPledgeV3Info implements IClientIncomingPacket
 		
 		player.sendPacket(new ExPledgeV3Info(player.getClan().getExp(), player.getClan().getRank(), player.getClan().getNotice(), player.getClan().isNoticeEnabled()));
 		player.sendPacket(new PledgeReceiveWarList(player.getClan(), _page));
+		player.sendPacket(new ExPledgeClassicRaidInfo(player));
 	}
 }
diff --git a/L2J_Mobius_Essence_5.2_FrostLord/java/org/l2jmobius/gameserver/network/clientpackets/pledgebonus/RequestPledgeBonusOpen.java b/L2J_Mobius_Essence_5.2_FrostLord/java/org/l2jmobius/gameserver/network/clientpackets/pledgebonus/RequestPledgeBonusOpen.java
index 17424112bd..2b5874bc2c 100644
--- a/L2J_Mobius_Essence_5.2_FrostLord/java/org/l2jmobius/gameserver/network/clientpackets/pledgebonus/RequestPledgeBonusOpen.java
+++ b/L2J_Mobius_Essence_5.2_FrostLord/java/org/l2jmobius/gameserver/network/clientpackets/pledgebonus/RequestPledgeBonusOpen.java
@@ -21,7 +21,6 @@ import org.l2jmobius.commons.network.PacketReader;
 import org.l2jmobius.gameserver.model.actor.instance.PlayerInstance;
 import org.l2jmobius.gameserver.network.GameClient;
 import org.l2jmobius.gameserver.network.clientpackets.IClientIncomingPacket;
-import org.l2jmobius.gameserver.network.serverpackets.pledgeV3.ExPledgeClassicRaidInfo;
 import org.l2jmobius.gameserver.network.serverpackets.pledgebonus.ExPledgeBonusOpen;
 import org.l2jmobius.gameserver.network.serverpackets.pledgedonation.ExPledgeDonationInfo;
 
@@ -46,7 +45,6 @@ public class RequestPledgeBonusOpen implements IClientIncomingPacket
 		}
 		
 		player.sendPacket(new ExPledgeBonusOpen(player));
-		player.sendPacket(new ExPledgeClassicRaidInfo());
 		final long joinedTime = (player.getClanJoinExpiryTime() - (Config.ALT_CLAN_JOIN_DAYS * 60000));
 		player.sendPacket(new ExPledgeDonationInfo(player.getClanDonationPoints(), (joinedTime + 86400000) < System.currentTimeMillis()));
 	}
diff --git a/L2J_Mobius_Essence_5.2_FrostLord/java/org/l2jmobius/gameserver/network/serverpackets/pledgeV3/ExPledgeClassicRaidInfo.java b/L2J_Mobius_Essence_5.2_FrostLord/java/org/l2jmobius/gameserver/network/serverpackets/pledgeV3/ExPledgeClassicRaidInfo.java
index 94706ba1be..5e68a11ed3 100644
--- a/L2J_Mobius_Essence_5.2_FrostLord/java/org/l2jmobius/gameserver/network/serverpackets/pledgeV3/ExPledgeClassicRaidInfo.java
+++ b/L2J_Mobius_Essence_5.2_FrostLord/java/org/l2jmobius/gameserver/network/serverpackets/pledgeV3/ExPledgeClassicRaidInfo.java
@@ -17,16 +17,22 @@
 package org.l2jmobius.gameserver.network.serverpackets.pledgeV3;
 
 import org.l2jmobius.commons.network.PacketWriter;
+import org.l2jmobius.gameserver.instancemanager.GlobalVariablesManager;
+import org.l2jmobius.gameserver.model.actor.instance.PlayerInstance;
+import org.l2jmobius.gameserver.model.clan.Clan;
 import org.l2jmobius.gameserver.network.OutgoingPackets;
 import org.l2jmobius.gameserver.network.serverpackets.IClientOutgoingPacket;
 
 /**
- * Written by Berezkin Nikolay, on 22.04.2021
+ * @author Index
  */
 public class ExPledgeClassicRaidInfo implements IClientOutgoingPacket
 {
-	public ExPledgeClassicRaidInfo()
+	private final Clan _clan;
+	
+	public ExPledgeClassicRaidInfo(PlayerInstance player)
 	{
+		_clan = player.getClan();
 	}
 	
 	@Override
@@ -34,13 +40,24 @@ public class ExPledgeClassicRaidInfo implements IClientOutgoingPacket
 	{
 		OutgoingPackets.EX_PLEDGE_CLASSIC_RAID_INFO.writeId(packet);
 		
-		packet.writeD(0); // clan arena stage
-		packet.writeD(5);
-		for (int i = 1; i <= 5; i++)
+		if (_clan == null)
 		{
-			packet.writeD(1867);
-			packet.writeD(i);
+			packet.writeD(0);
 		}
+		else
+		{
+			final int stage = GlobalVariablesManager.getInstance().getInt(GlobalVariablesManager.MONSTER_ARENA_VARIABLE + _clan.getId(), 0);
+			packet.writeD(stage);
+			
+			// Skill rewards.
+			packet.writeD(5);
+			for (int i = 1; i <= 5; i++)
+			{
+				packet.writeD(1867);
+				packet.writeD(i);
+			}
+		}
+		
 		return true;
 	}
 }
diff --git a/L2J_Mobius_Essence_6.0_BattleChronicle/dist/game/data/scripts/handlers/admincommandhandlers/AdminPledge.java b/L2J_Mobius_Essence_6.0_BattleChronicle/dist/game/data/scripts/handlers/admincommandhandlers/AdminPledge.java
index 3157a9ca32..79d47fcb44 100644
--- a/L2J_Mobius_Essence_6.0_BattleChronicle/dist/game/data/scripts/handlers/admincommandhandlers/AdminPledge.java
+++ b/L2J_Mobius_Essence_6.0_BattleChronicle/dist/game/data/scripts/handlers/admincommandhandlers/AdminPledge.java
@@ -21,6 +21,7 @@ import java.util.StringTokenizer;
 import org.l2jmobius.gameserver.data.sql.ClanTable;
 import org.l2jmobius.gameserver.enums.UserInfoType;
 import org.l2jmobius.gameserver.handler.IAdminCommandHandler;
+import org.l2jmobius.gameserver.instancemanager.GlobalVariablesManager;
 import org.l2jmobius.gameserver.model.WorldObject;
 import org.l2jmobius.gameserver.model.actor.instance.PlayerInstance;
 import org.l2jmobius.gameserver.model.clan.Clan;
@@ -196,6 +197,26 @@ public class AdminPledge implements IAdminCommandHandler
 						}
 						break;
 					}
+					case "arena":
+					{
+						if (clan == null)
+						{
+							BuilderUtil.sendSysMessage(activeChar, "Target player has no clan!");
+							break;
+						}
+						
+						try
+						{
+							final int stage = Integer.parseInt(param);
+							GlobalVariablesManager.getInstance().set(GlobalVariablesManager.MONSTER_ARENA_VARIABLE + clan.getId(), stage);
+							BuilderUtil.sendSysMessage(activeChar, "You set " + stage + " Monster Arena stage for clan " + clan.getName() + "");
+						}
+						catch (Exception e)
+						{
+							BuilderUtil.sendSysMessage(activeChar, "Usage: //pledge arena <number>");
+						}
+						break;
+					}
 				}
 				break;
 			}
diff --git a/L2J_Mobius_Essence_6.0_BattleChronicle/dist/game/data/scripts/instances/MonsterArena/MonsterArena.java b/L2J_Mobius_Essence_6.0_BattleChronicle/dist/game/data/scripts/instances/MonsterArena/MonsterArena.java
index 50e6b2bb6a..d7817d04f2 100644
--- a/L2J_Mobius_Essence_6.0_BattleChronicle/dist/game/data/scripts/instances/MonsterArena/MonsterArena.java
+++ b/L2J_Mobius_Essence_6.0_BattleChronicle/dist/game/data/scripts/instances/MonsterArena/MonsterArena.java
@@ -20,11 +20,21 @@ import java.util.Collection;
 import java.util.concurrent.ConcurrentHashMap;
 
 import org.l2jmobius.commons.threads.ThreadPool;
+import org.l2jmobius.gameserver.data.xml.SkillData;
 import org.l2jmobius.gameserver.enums.ChatType;
 import org.l2jmobius.gameserver.instancemanager.GlobalVariablesManager;
 import org.l2jmobius.gameserver.model.actor.Npc;
 import org.l2jmobius.gameserver.model.actor.instance.PlayerInstance;
+import org.l2jmobius.gameserver.model.clan.Clan;
+import org.l2jmobius.gameserver.model.clan.ClanMember;
+import org.l2jmobius.gameserver.model.events.EventType;
+import org.l2jmobius.gameserver.model.events.ListenerRegisterType;
+import org.l2jmobius.gameserver.model.events.annotations.RegisterEvent;
+import org.l2jmobius.gameserver.model.events.annotations.RegisterType;
+import org.l2jmobius.gameserver.model.events.impl.creature.player.OnPlayerClanLeft;
+import org.l2jmobius.gameserver.model.events.impl.creature.player.OnPlayerLogin;
 import org.l2jmobius.gameserver.model.instancezone.Instance;
+import org.l2jmobius.gameserver.model.skills.Skill;
 import org.l2jmobius.gameserver.network.NpcStringId;
 import org.l2jmobius.gameserver.network.serverpackets.ExSendUIEvent;
 
@@ -32,7 +42,7 @@ import instances.AbstractInstance;
 
 /**
  * @author Mobius
- * @URL https://l2wiki.com/classic/Clan_-_Clan_Arena
+ * @URL https://www.l2central.info/essence/articles/793.html?lang=en
  */
 public class MonsterArena extends AbstractInstance
 {
@@ -62,6 +72,12 @@ public class MonsterArena extends AbstractInstance
 		25811, // Satur
 		25812, // Kosnak
 		25813, // Garaki
+		// TODO: 21-25 bosses
+		// 25834, // Shadai
+		// 25835, // Tyrobait
+		// 25836, // Tier
+		// 25837, // Cherkia
+		// 25838, // Spicula
 	};
 	// Rewards
 	private static final int BATTLE_BOX_1 = 90913;
@@ -71,9 +87,10 @@ public class MonsterArena extends AbstractInstance
 	private static final int VALOR_BOX = 90915;
 	private static final int TICKET_M = 90946;
 	private static final int TICKET_H = 90947;
+	// Skill
+	private static final int CLAN_EXUBERANCE = 1867;
 	// Misc
 	private static final Collection<PlayerInstance> REWARDED_PLAYERS = ConcurrentHashMap.newKeySet();
-	private static final String MONSTER_ARENA_VARIABLE = "MA_C";
 	private static final int TEMPLATE_ID = 192;
 	
 	public MonsterArena()
@@ -151,16 +168,16 @@ public class MonsterArena extends AbstractInstance
 					machine.setScriptValue(player.getClanId());
 					
 					// Initialize progress if it does not exist.
-					if (GlobalVariablesManager.getInstance().getInt(MONSTER_ARENA_VARIABLE + machine.getScriptValue(), -1) == -1)
+					if (GlobalVariablesManager.getInstance().getInt(GlobalVariablesManager.MONSTER_ARENA_VARIABLE + machine.getScriptValue(), -1) == -1)
 					{
-						GlobalVariablesManager.getInstance().set(MONSTER_ARENA_VARIABLE + machine.getScriptValue(), 1);
+						GlobalVariablesManager.getInstance().set(GlobalVariablesManager.MONSTER_ARENA_VARIABLE + machine.getScriptValue(), 1);
 					}
 					
 					// On max progress, set last four bosses.
-					final int progress = GlobalVariablesManager.getInstance().getInt(MONSTER_ARENA_VARIABLE + machine.getScriptValue());
-					if (progress > 17)
+					final int progress = GlobalVariablesManager.getInstance().getInt(GlobalVariablesManager.MONSTER_ARENA_VARIABLE + machine.getScriptValue());
+					if (progress > 17) // TODO: 22 for 25 total bosses.
 					{
-						GlobalVariablesManager.getInstance().set(MONSTER_ARENA_VARIABLE + machine.getScriptValue(), 17);
+						GlobalVariablesManager.getInstance().set(GlobalVariablesManager.MONSTER_ARENA_VARIABLE + machine.getScriptValue(), 17); // TODO: 22 for 25 total bosses.
 					}
 					
 					startQuestTimer("machine_talk", 10000, machine, null);
@@ -196,7 +213,7 @@ public class MonsterArena extends AbstractInstance
 				final Instance world = npc.getInstanceWorld();
 				if (world != null)
 				{
-					world.spawnGroup("boss_" + GlobalVariablesManager.getInstance().getInt(MONSTER_ARENA_VARIABLE + npc.getScriptValue()));
+					world.spawnGroup("boss_" + GlobalVariablesManager.getInstance().getInt(GlobalVariablesManager.MONSTER_ARENA_VARIABLE + npc.getScriptValue()));
 				}
 				break;
 			}
@@ -215,7 +232,7 @@ public class MonsterArena extends AbstractInstance
 					
 					// Mandatory reward.
 					final Npc machine = world.getNpc(MACHINE);
-					final int progress = GlobalVariablesManager.getInstance().getInt(MONSTER_ARENA_VARIABLE + machine.getScriptValue());
+					final int progress = GlobalVariablesManager.getInstance().getInt(GlobalVariablesManager.MONSTER_ARENA_VARIABLE + machine.getScriptValue());
 					if (progress > 16)
 					{
 						giveItems(player, BATTLE_BOX_4, 1);
@@ -288,7 +305,7 @@ public class MonsterArena extends AbstractInstance
 			machine.broadcastSay(ChatType.NPC_GENERAL, NpcStringId.HA_NOT_BAD);
 			
 			// Save progress to global variables.
-			GlobalVariablesManager.getInstance().increaseInt(MONSTER_ARENA_VARIABLE + machine.getScriptValue(), 1);
+			GlobalVariablesManager.getInstance().increaseInt(GlobalVariablesManager.MONSTER_ARENA_VARIABLE + machine.getScriptValue(), 1);
 			
 			// Spawn reward chests.
 			world.spawnGroup("supplies");
@@ -317,6 +334,48 @@ public class MonsterArena extends AbstractInstance
 		return npc.getId() + "-01.htm";
 	}
 	
+	@RegisterEvent(EventType.ON_PLAYER_LOGIN)
+	@RegisterType(ListenerRegisterType.GLOBAL_PLAYERS)
+	public void onPlayerLogin(OnPlayerLogin event)
+	{
+		final PlayerInstance player = event.getPlayer();
+		if (player == null)
+		{
+			return;
+		}
+		
+		final Clan clan = player.getClan();
+		if (clan == null)
+		{
+			// Should never happen.
+			final Skill knownSkill = player.getKnownSkill(CLAN_EXUBERANCE);
+			if (knownSkill != null)
+			{
+				player.removeSkill(knownSkill, true);
+			}
+			return;
+		}
+		
+		final int stage = GlobalVariablesManager.getInstance().getInt(GlobalVariablesManager.MONSTER_ARENA_VARIABLE + clan.getId(), 0);
+		if (stage > 4)
+		{
+			player.addSkill(SkillData.getInstance().getSkill(CLAN_EXUBERANCE, stage / 5), false);
+		}
+	}
+	
+	@RegisterEvent(EventType.ON_PLAYER_CLAN_LEFT)
+	@RegisterType(ListenerRegisterType.GLOBAL_PLAYERS)
+	public void onPlayerClanLeft(OnPlayerClanLeft event)
+	{
+		final ClanMember member = event.getClanMember();
+		if ((member == null) || !member.isOnline())
+		{
+			return;
+		}
+		
+		member.getPlayerInstance().removeSkill(CLAN_EXUBERANCE, true);
+	}
+	
 	public static void main(String[] args)
 	{
 		new MonsterArena();
diff --git a/L2J_Mobius_Essence_6.0_BattleChronicle/java/org/l2jmobius/gameserver/instancemanager/DailyTaskManager.java b/L2J_Mobius_Essence_6.0_BattleChronicle/java/org/l2jmobius/gameserver/instancemanager/DailyTaskManager.java
index e0556cb417..2dfc9b6d68 100644
--- a/L2J_Mobius_Essence_6.0_BattleChronicle/java/org/l2jmobius/gameserver/instancemanager/DailyTaskManager.java
+++ b/L2J_Mobius_Essence_6.0_BattleChronicle/java/org/l2jmobius/gameserver/instancemanager/DailyTaskManager.java
@@ -83,6 +83,7 @@ public class DailyTaskManager
 		{
 			clanLeaderApply();
 			resetVitalityWeekly();
+			resetMonsterArenaWeekly();
 			resetTimedHuntingZonesWeekly();
 		}
 		else
@@ -219,6 +220,14 @@ public class DailyTaskManager
 		LOGGER.info("Vitality resetted");
 	}
 	
+	private void resetMonsterArenaWeekly()
+	{
+		for (Clan clan : ClanTable.getInstance().getClans())
+		{
+			GlobalVariablesManager.getInstance().remove(GlobalVariablesManager.MONSTER_ARENA_VARIABLE + clan.getId());
+		}
+	}
+	
 	private void resetClanBonus()
 	{
 		ClanTable.getInstance().getClans().forEach(Clan::resetClanBonus);
diff --git a/L2J_Mobius_Essence_6.0_BattleChronicle/java/org/l2jmobius/gameserver/instancemanager/GlobalVariablesManager.java b/L2J_Mobius_Essence_6.0_BattleChronicle/java/org/l2jmobius/gameserver/instancemanager/GlobalVariablesManager.java
index 46b6f6940f..c9d23ecc18 100644
--- a/L2J_Mobius_Essence_6.0_BattleChronicle/java/org/l2jmobius/gameserver/instancemanager/GlobalVariablesManager.java
+++ b/L2J_Mobius_Essence_6.0_BattleChronicle/java/org/l2jmobius/gameserver/instancemanager/GlobalVariablesManager.java
@@ -42,6 +42,7 @@ public class GlobalVariablesManager extends AbstractVariables
 	private static final String INSERT_QUERY = "INSERT INTO global_variables (var, value) VALUES (?, ?)";
 	
 	// Public variable names
+	public static final String MONSTER_ARENA_VARIABLE = "MA_C";
 	public static final String PURGE_REWARD_TIME = "PURGE_REWARD_TIME";
 	
 	protected GlobalVariablesManager()
diff --git a/L2J_Mobius_Essence_6.0_BattleChronicle/java/org/l2jmobius/gameserver/network/clientpackets/pledgeV3/RequestExPledgeV3Info.java b/L2J_Mobius_Essence_6.0_BattleChronicle/java/org/l2jmobius/gameserver/network/clientpackets/pledgeV3/RequestExPledgeV3Info.java
index 41679216dd..0195c7960a 100644
--- a/L2J_Mobius_Essence_6.0_BattleChronicle/java/org/l2jmobius/gameserver/network/clientpackets/pledgeV3/RequestExPledgeV3Info.java
+++ b/L2J_Mobius_Essence_6.0_BattleChronicle/java/org/l2jmobius/gameserver/network/clientpackets/pledgeV3/RequestExPledgeV3Info.java
@@ -21,6 +21,7 @@ import org.l2jmobius.gameserver.model.actor.instance.PlayerInstance;
 import org.l2jmobius.gameserver.network.GameClient;
 import org.l2jmobius.gameserver.network.clientpackets.IClientIncomingPacket;
 import org.l2jmobius.gameserver.network.serverpackets.PledgeReceiveWarList;
+import org.l2jmobius.gameserver.network.serverpackets.pledgeV3.ExPledgeClassicRaidInfo;
 import org.l2jmobius.gameserver.network.serverpackets.pledgeV3.ExPledgeV3Info;
 
 /**
@@ -53,5 +54,6 @@ public class RequestExPledgeV3Info implements IClientIncomingPacket
 		
 		player.sendPacket(new ExPledgeV3Info(player.getClan().getExp(), player.getClan().getRank(), player.getClan().getNotice(), player.getClan().isNoticeEnabled()));
 		player.sendPacket(new PledgeReceiveWarList(player.getClan(), _page));
+		player.sendPacket(new ExPledgeClassicRaidInfo(player));
 	}
 }
diff --git a/L2J_Mobius_Essence_6.0_BattleChronicle/java/org/l2jmobius/gameserver/network/clientpackets/pledgebonus/RequestPledgeBonusOpen.java b/L2J_Mobius_Essence_6.0_BattleChronicle/java/org/l2jmobius/gameserver/network/clientpackets/pledgebonus/RequestPledgeBonusOpen.java
index 17424112bd..2b5874bc2c 100644
--- a/L2J_Mobius_Essence_6.0_BattleChronicle/java/org/l2jmobius/gameserver/network/clientpackets/pledgebonus/RequestPledgeBonusOpen.java
+++ b/L2J_Mobius_Essence_6.0_BattleChronicle/java/org/l2jmobius/gameserver/network/clientpackets/pledgebonus/RequestPledgeBonusOpen.java
@@ -21,7 +21,6 @@ import org.l2jmobius.commons.network.PacketReader;
 import org.l2jmobius.gameserver.model.actor.instance.PlayerInstance;
 import org.l2jmobius.gameserver.network.GameClient;
 import org.l2jmobius.gameserver.network.clientpackets.IClientIncomingPacket;
-import org.l2jmobius.gameserver.network.serverpackets.pledgeV3.ExPledgeClassicRaidInfo;
 import org.l2jmobius.gameserver.network.serverpackets.pledgebonus.ExPledgeBonusOpen;
 import org.l2jmobius.gameserver.network.serverpackets.pledgedonation.ExPledgeDonationInfo;
 
@@ -46,7 +45,6 @@ public class RequestPledgeBonusOpen implements IClientIncomingPacket
 		}
 		
 		player.sendPacket(new ExPledgeBonusOpen(player));
-		player.sendPacket(new ExPledgeClassicRaidInfo());
 		final long joinedTime = (player.getClanJoinExpiryTime() - (Config.ALT_CLAN_JOIN_DAYS * 60000));
 		player.sendPacket(new ExPledgeDonationInfo(player.getClanDonationPoints(), (joinedTime + 86400000) < System.currentTimeMillis()));
 	}
diff --git a/L2J_Mobius_Essence_6.0_BattleChronicle/java/org/l2jmobius/gameserver/network/serverpackets/pledgeV3/ExPledgeClassicRaidInfo.java b/L2J_Mobius_Essence_6.0_BattleChronicle/java/org/l2jmobius/gameserver/network/serverpackets/pledgeV3/ExPledgeClassicRaidInfo.java
index 94706ba1be..5e68a11ed3 100644
--- a/L2J_Mobius_Essence_6.0_BattleChronicle/java/org/l2jmobius/gameserver/network/serverpackets/pledgeV3/ExPledgeClassicRaidInfo.java
+++ b/L2J_Mobius_Essence_6.0_BattleChronicle/java/org/l2jmobius/gameserver/network/serverpackets/pledgeV3/ExPledgeClassicRaidInfo.java
@@ -17,16 +17,22 @@
 package org.l2jmobius.gameserver.network.serverpackets.pledgeV3;
 
 import org.l2jmobius.commons.network.PacketWriter;
+import org.l2jmobius.gameserver.instancemanager.GlobalVariablesManager;
+import org.l2jmobius.gameserver.model.actor.instance.PlayerInstance;
+import org.l2jmobius.gameserver.model.clan.Clan;
 import org.l2jmobius.gameserver.network.OutgoingPackets;
 import org.l2jmobius.gameserver.network.serverpackets.IClientOutgoingPacket;
 
 /**
- * Written by Berezkin Nikolay, on 22.04.2021
+ * @author Index
  */
 public class ExPledgeClassicRaidInfo implements IClientOutgoingPacket
 {
-	public ExPledgeClassicRaidInfo()
+	private final Clan _clan;
+	
+	public ExPledgeClassicRaidInfo(PlayerInstance player)
 	{
+		_clan = player.getClan();
 	}
 	
 	@Override
@@ -34,13 +40,24 @@ public class ExPledgeClassicRaidInfo implements IClientOutgoingPacket
 	{
 		OutgoingPackets.EX_PLEDGE_CLASSIC_RAID_INFO.writeId(packet);
 		
-		packet.writeD(0); // clan arena stage
-		packet.writeD(5);
-		for (int i = 1; i <= 5; i++)
+		if (_clan == null)
 		{
-			packet.writeD(1867);
-			packet.writeD(i);
+			packet.writeD(0);
 		}
+		else
+		{
+			final int stage = GlobalVariablesManager.getInstance().getInt(GlobalVariablesManager.MONSTER_ARENA_VARIABLE + _clan.getId(), 0);
+			packet.writeD(stage);
+			
+			// Skill rewards.
+			packet.writeD(5);
+			for (int i = 1; i <= 5; i++)
+			{
+				packet.writeD(1867);
+				packet.writeD(i);
+			}
+		}
+		
 		return true;
 	}
 }