Ashan-Bashan, the Stitched

Invoke (Each creature you sacrifice while casting this
spell pays for {1} or one mana of that creature's color.)
Ashan-Bashan gets +1/+0 for each creature card
in your graveyard and gets +0/+1 for each
creature card in your opponents' graveyards.
{1}{b}{g}, Discard a card: Each opponent mills
a number of cards equal to the number of
creature cards in your graveyard.