Vithian Drake

Flying, Slip (At the end of any phase, if this creature is tapped, exile it. Return it to the battlefield under owner's control at the start of your next turn)
When Vithian Drake enters the battlefield, choose a creature type. Vithian Drake gets Enemy of that type. (If an opponent controls a creature of the named type, this creature gets +1/+1 and must attack it able)