Rayfernape

Haste, Prowess
When Rayfernape enters the battlefield, up to one target creature can't block this turn.
When Rayfernape leaves the battlefield, if it is your turn, there is an additional combat phase at the end of your end step. Untap all creatures you control. They gain haste until end of turn. If it is not your turn, Rayfernape deals damage equal to its power to target creature an opponent controls.