Ratatiskr, Guru of Acorns

Ratatiskr, Guru of Acorns enters with five
+1/+1 counters on it.
{1}, Remove a +1/+1 counter from a creature
you control: Create a 1/1 green Squirrel creature token.
{1}, Sacrifice a creature: Put a +1/+1 counter
on target creature.