Cursed Soul is an unlockable trinket in Elitium, a mod for The Binding of Isaac.
Converts all Hearts into
Soul Hearts.
Converts all Half Hearts into
Half Soul Hearts.
Converts all Double Hearts into
Black Hearts.
Converts all Rotten Hearts into
Bone Hearts.
The golden variant spawns has a 50% chance to spawn more hearts.
Defeat The Lamb and Isaac as The Lost.