Pact-gorger Dragon

Flying
Whenever you Inscribe for the first time each
turn, put a +1/+1 counter on Pact-Gorger
Dragon. It gains indestructible until end of turn.
At the beginning or each end step, if you have sacrificed twelve or more pacts, win the game.
It is greedy to get a cut of every deal made, even
if it is just the scraps.