Khao, Advisor and Rouge

+2: Target creature gains skulk until end of turn
-2: This card turns into a 1/2 Human Rouge creature with skulk, lifelink, hexproof, deathtouch, and first strike until end of turn.
-10: Creatures you control get +0/+10, lifelink, and can't be blocked. All opponents exile 4 lands and the top 20 cards of their deck.