Unchained Fury

Devoid, Flying, Trample
Megamorph {2}{w}{u}{c} (You may play this card facedown as a 2/2 creature for {3}. Turn it up at any time for its Megamorph cost. Then put a +1/+1 counter on it.)
When Unchained Fury is turned face up, creatures you control gain flying until end of turn, and creature with flying can't block this turn.