+Urdnan (4)
Flying, first strike, haste
Lightwalker has flying as long as it has a +1/+1 counter on it.
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.)
Flying
Whenever an opponent casts a spell, put a +1/+1 counter on Sunscorch Regent and you gain 1 life.
Gatherer works better in the Companion app!