Kha'Zix, The Void Reaver

When Kha'Zix enters the battlefield, put a flying counter on him if a creature card in an opponents graveyard has flying. Repeat this process for first strike, double strike, deathtouch, haste, hexproof, indestructible, lifelink, menace, reach, trample, and vigilance. Then put a +1/+1 counter on Kha'Zix, for each counter put on him this way.