Whore of Babylon/ Dark Prince's Crown: Can lower Isaac's health on demand to activate the bonus.The Wafer: Isaac loses half a heart instead of a full heart.The Polaroid: Isaac takes no damage while invincible, allowing for repeated free uses of the item.Panic Button: Self-damage occurs before enemy damage, making it almost impossible to lose Angel or Devil chance.Old Bandage / Shard of Glass: Isaac has a chance to drop a red heart while using the item.Isaac's Heart: Isaac cannot take damage from the Razor Blade, allowing for infinite uses of the item.Book of Virtues: Spawns red wisps in the middle ring.

The Book of Belial + Birthright as Judas / Dark Judas: Invokes the effect of The Necronomicon effect along with the original effect.Using this item as The Lost will kill The Lost, even if the protective effect from Holy Mantle is still active.Using this item in the Ultra Greed boss room will remove 2-4 coins and drop 1-3 pennies on the floor, as if Isaac was hit by an enemy attack.Using the Razor Blade grants immunity frames this allows access to Curse Rooms without losing soul hearts.Using this item does not affect Devil Room/ Angel Room chances.The effect stacks with itself and Red Patch, which provides a similar benefit.It is possible to die using Razor Blade if Isaac does not have enough hearts.Eve starts with the Razor Blade if unlocked from the Greed Machine, even if Satan has not been defeated with Eve.Both conditions must be met for Eve to hold it donating 439 coins before defeating Satan with Eve will wrongly state on Eve's profile on the Character Selection Screen that she has it equipped.Eve starts with this item after unlocking it and donating 439 coins to the Greed Donation Machine.When used more than once in the same room, damage taken is lowered to half a heart.Razor Blade takes Red Hearts before other heart types.On use, damages Isaac for a full heart of health and grants +1.2 damage for the current room.

Binding of isaac rebirth satan