Polukranos, Unchained
{2}{B}{G}
Legendary Creature -- Zombie Hydra
0/0
~this~ enters with six +1/+1 counters on it. It escapes with twelve +1/+1 counters on it instead.
If damage would be dealt to ~this~ while it has a +1/+1 counter on it, prevent that damage and remove that many +1/+1 counters from it.
{1}{B}{G}: ~this~ fights another target creature.
Escape--{4}{B}{G}, Exile six other cards from your graveyard.