Zyyl, Vicious Captain

+1: Put a 2/2 black bird mutant creature token with flying onto the battlefield.
-2: Zyyl, Vicious Captain deals 5 damage to target creature. If that creature does not die from this ability alone, you gain 7 life.
-8: Mutant creatures you control become 7/7 black bird mutant creatures with flying, double strike, and lifelink until your next turn.