"Massacre" Assassin of Black

【CONT】 During this card's battle, all players cannot play "Backup" from hand.【AUTO】 When this card is placed on the stage from your hand, draw up to two cards, choose a card in your hand, and put it into your waiting room.【AUTO】 [Put two cards from your hand into your waiting room] When this card attacks, you may pay the cost. If you do, deal one damage to your opponent. (This damage may be canceled)