Addition of BonusDropAmount effect.

L2J_Mobius_3.0_Helios/java/com/l2jmobius/gameserver/model/actor/templates/L2NpcTemplate.java

@@ -765,6 +765,13 @@ public final class L2NpcTemplate extends L2CharTemplate implements IIdentifiable
 						}
 					}
 					
+					// bonus drop amount effect
+					final double dropAmountEffectBonus = killer.getStat().getValue(Stats.BONUS_DROP_AMOUNT, 0);
+					if (dropAmountEffectBonus > 0)
+					{
+						rateAmount += rateAmount * dropAmountEffectBonus;
+					}
+					
 					// finally
 					return new ItemHolder(dropItem.getItemId(), (long) (Rnd.get(dropItem.getMin(), dropItem.getMax()) * rateAmount));
 				}

L2J_Mobius_3.0_Helios/java/com/l2jmobius/gameserver/model/stats/Stats.java

@@ -130,6 +130,7 @@ public enum Stats
 	EXPSP_RATE("rExp"),
 	BONUS_EXP("bonusExp"),
 	BONUS_SP("bonusSp"),
+	BONUS_DROP_AMOUNT("bonusDropAmount"),
 	BONUS_DROP_RATE("bonusDropRate"),
 	ATTACK_CANCEL("cancel"),