Iron Heart is a mechanics in Benighted Soul, a mod for The Binding of Isaac.

Protects Isaac from taking non-self damage
(Loss and invincible time are related to the damage type).
Cannot prevent Isaac from dying.

To other characters:
• Will be cleared next level.
• Fixed 28 maximum.

To Benighted Magdalene:
• Permanent duration.
• Tiggers hurt effects every 7 loss.
• Recovers 20% in a new room.
• Recovers 15% in a new greed wave.
• When gained from some other effects, the part over the maximum will be saved until the next room.
• Causes 1.5 hearts damage when taking over-damage.
• Some actions will increase or decrease the maximum in the range [14, 70].

Actions that affect the maximum of Benighted Magdalene:
• Any Beggar is killed: -3 this level.
• Any Beggar leaves bonus: +7 this level.
• Any Devil Beggar is killed: +7 this level.
• Any Devil Beggar leaves bonus: -6 this level.
• Any devil deal is done: -6.
• Holds Key Piece 1: +2.
• Holds Key Piece 2: +2.
• Holds a Seraphim item: +3.
• Holds a Leviathan item: -3.

• Download Benighted Soul from the Steam Workshop.

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