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Fiend FolioFiend's Horn"There's a bit of him in all of us"Passive item
Grants a chance to spawn a Hollow Friend each time an enemy dies. The friends disappear on room clear and do not produce any hearts.

The chance to spawn a Hollow Friend scales with luck and the amount of immoral hearts Isaac has, using the formula: 0.2 + 0.15 × max(14, LuckStat) + 0.025 × ImmoralHearts.
Unlock: Defeat Delirium as Fiend.
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