Moonlight Conjurer

Lifelink, Flash
megamorph {3}{u} (play this card face down as a
2/2 for {5}{u}. flip it face up at any time for its
megamorph cost and place a +1/+1 counter on it.
When this card turns face up, create a copy of
target creature you control. if it is a legendary,
the copy isn't.