Onitori Ken

Megamorph {1}{u}{b} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up at any time for its megamorph cost and put a +1/+1 counter on it.)
Outlast {1}{u}{b} ({1}{u}{b}, {t}: Put a +1/+1 counter on this creature. Outlast only as a sorcery.)
Remove a +1/+1 counter from Onitori Ken, {t}: Destroy target nonblack creature.