Grants one Black Heart. Upon taking damage that reduces Isaac's health to one heart or less, deals damage to all enemies in the room. Increases the damage of Black Hearts and The Necronomicon from 40 to 80.
"Evil up. Your enemies will pay!"
- Grants one Black Heart.
- Deals 80 damage to everything in the room upon taking damage if Isaac's total health (Red Hearts, Soul Hearts, and Black Hearts) is at one heart afterward.
- Doubles damage from Black Hearts from 40 to 80.
- Devil Beggar
- Devil Room
- Secret Room
- Library (Greed Mode)