Machina Resavenger

(Quick Effect): You can send this card from your hand or field to the GY, then target 1 "Machina" monster you control; it gains 1200 ATK until the end of this turn. When your "Machina" monster destroys an opponent's monster by battle, while this card is in your GY: You can add this card to your hand. You can only use each effect of "Machina Resavenger" once per turn.