Corbeau Shinobiseau MP17-FR188

Not Invocable Specially. Once per turn, during the Damage Step of each player, when this card battles an opponent's monster, you can discard 1 Spirit monster; until the end of the Battle Phase, this card gains ATK/DEF equal to the ATK/DEF of the discarded monster. Once per turn, during the End Phase, if this card was Normal Summoned or flipped face-up this turn, return it to the hand.