Hidden Dragonslayer  (2) 
Creature — Human Warrior (2/1) 
Lifelink
Megamorph  (You may cast this card face down as a 2/2 creature for . Turn it face up any time for its megamorph cost and put a +1/+1 counter on it.)
When Hidden Dragonslayer is turned face up, destroy target creature with power 4 or greater an opponent controls.