Soul Offerings

This card enters the battlefield with three sacrifice counters on it.
Whenever you sacrifice a creature, remove a Counter from this card instead. This still counts as sacrificing a creature. Then put a +1/+1 counter on target Demon. When all counters have been removed from this card, sacrifice it, then put a X/X Demon Token with flying and "This cards power and Toughness are Equal to the number of creatures in your graveyard,"