Narrative Challenger

Double strike
Megamorph {3}{r}{g} (You may cast this 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.)
When Narrative Challenger is turned face up, instead of putting a +1/+1 counter on it, you may
put it on the stack and transform it.