Hydra of Lernea

Polukranos enters with six +1/+1 counters on it. It escapes with twelve +1/+1 counters on it instead.

If damage would be dealt to Polukranos while it has a +1/+1 counter on it, prevent that damage and remove that many +1/+1 counters from it.

{1}{b}{g}: Polukranos fights another target creature.

Escape- {4}{b}{g}, Exile six other cards from your graveyard.