Outer-God, The great Ooze

As a additional cost, sacrifice 4 permanents
and lose 6 life.
When Outer-God, The great Ooze enters the
battlefield, summon a 2/2 green ooze token
for each card in your graveyard and selected
player’s graveyard.
At the beginning of your end step, add a +1/+1
counter onto each green ooze token you control.