If a face-up Memento monster(s) you control leaves the field because of an opponent s card: Special Summon 1 Mementoal Tecuhtlica – Combined Creation from your hand or Deck, ignoring its Summoning conditions. If your opponent moves a Memento monster(s) out of your GY, while this card is in your GY (except during the Damage Step): You can banish this card; Special Summon as many Memento monsters as possible with different names from your hand and or Deck. You can only use each effect of Mementotlan Bone Back once per turn.