The Chaos Lord

0: When a creature you control deals damage this turn, you put a loyalty counter on The Chaos Lord and you lose 1 life.
0: Until your next turn, The Chaos Lord becomes 1/1 avatar creature token with haste and indestructible. You may activate this ability at any time.
-8: Until end of turn, creatures you control gain hexproof, indestructible, double strike, skulk. You gain 20 life.