According to retail: "The player wielding Zariche cannot give or accept buffs and may not be healed or heal other players. However, he or she may use buffs and heal themselves.", cursed weapon wielder cannot receive clan hall magic support either

L2_GameServer/java/net/sf/l2j/gameserver/model/actor/instance/L2ClanHallManagerInstance.java

@@ -1249,6 +1249,12 @@ public class L2ClanHallManagerInstance extends L2MerchantInstance
             }
             else if (actualCommand.equalsIgnoreCase("support"))
             {
+            	if (player.isCursedWeaponEquipped())
+            	{
+            		// Custom system message
+            		player.sendMessage("The wielder of a cursed weapon cannot receive outside heals or buffs");
+            		return;
+            	}
                 setTarget(player);
                 L2Skill skill;
                 if (val == "") return;