This item appears on the six of hearts in the official Binding of Isaac Tarot Card deck. In this illustration, the pact is titled "Your Soul," and the body of the contract consists of the text from the bridge of the song "Deal with the Devil," by Judas Priest. The pact is signed by "E" and "R.C."
Brimstone has the same appearance of The Pact, but with big, curved horns and slightly less angry eyes.
Grants two 
Soul Hearts.
Grants two 
Black Hearts.
This item belongs to the 
Leviathan set. Collecting three items from this set will transform Isaac into Leviathan.
Black Feather: Counts as an evil item, granting a damage up.
Brimstone has the same appearance of The Pact, but with big, curved horns and slightly less angry eyes.
The Binding of Isaac: Rebirth
