Mementotlan Shleepy - The Infinite Forbidden (INFO)

During the turn a monster(s) in your possession was destroyed by card effect (Quick Effect): You can Special Summon this card from your hand. If this card is Normal or Special Summoned: You can Fusion Summon 1 "Memento" Fusion Monster from your Extra Deck, using monsters from your hand or field. If this card is destroyed by battle or card effect: You can send 1 "Memento" card from your Deck to the GY, except "Mementotlan Shleepy". You can only use each effect of "Mementotlan Shleepy" once per turn.