Jack of Hearts is an unlockable consumable in Fiend Folio, a mod for The Binding of Isaac.

Spawns an Immoral Heart if Isaac does not have one.

Converts all Red Hearts into Immoral Hearts.

Converts all Half Red Hearts into Half Immoral Hearts.

Defeat Greedier Mode as Fiend.

The following special synergies and interactions for Jack of Hearts have been documented.

* Note that not all possible synergies and interactions are listed here.

The following sounds are related to this consumable.

• Check out the consumable description on the mod's external Wiki.
• Download Fiend Folio from the Steam Workshop.