Alaric's Vengeance I

When you start the game with this card in your hand or when you draw it you may play it face down.
When 3 creatures you control attack and are unblocked you may pay {2}{u} and flip Alaric's Vengeance face up. If you do place a token onto the battlefield that is a copy of target creature.
"You're all free to return, but I must kill her."