You can Special Summon this card (from your hand) by returning 1 U.A. monster you control to the hand, except U.A. Perfect Ace . You can only Special Summon U.A. Perfect Ace once per turn this way. Once per turn, during your opponent s turn, when a card or effect is activated: You can discard 1 card; negate that activation, and if you do, destroy it (this is a Quick Effect).