Ninjutsu

Mecânica MTG

Ninjutsu is a mechanic that allows your creatures to appear on the battlefield in a puff of smoke* when your opponent least expects it. If an attacking creature you control goes unblocked, you can reveal a card with ninjutsu from your hand, pay the ninjutsu cost, and return that attacking creature to its owner's hand. If you do, put the creature with ninjutsu onto the battlefield tapped and attacking.