Polukranos, Retrained

Polukranos enters the battlefield with six +1/+1 counters on it. It escapes with X +1/+1 counters
on it.
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 target creature.
Escape — {4}{b}{g}, Exile X other cards from your
graveyard.