Ire Shaman (141) [Dragons of Tarkir]

Menace (This creature can't be blocked except by two or more creatures.) Megamorph {R} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its megamorph cost and put a +1/+1 counter on it.) When this creature is turned face up, exile the top card of your library. Until end of turn, you may play that card.