Kathrine, from Tarkir

Lifelink, deathtouch
Megamorph {5}{b}{b} (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 Kathrine, from Tarkir is turned face up, destroy target creature.