

Any invincibility-granting item can allow you to buy items that cost Soul Hearts for free, as long as you have at least 3 Soul Hearts. The Devil Room has a chance to appear after defeating a boss in the floors between and including Basement II - Womb II.

If you are playing as ? with The Wafer, buying any item for Soul Hearts will only cost half a Soul Heart, instead of 3 Soul Hearts.Going out of the room will remove the extra heart container, if any Temporary health boosts such as those from the XI Strength Tarot Card or Liberty Cap will not reduce the number of heart containers lost from a deal.However, they will prevent Isaac from dying if he has no Soul Hearts.
#The binding of isaac devil room items free
Invincibility granting items such as Book Of Shadows will not make the items free of health costs, unless you are playing as ?, whereas items that grant invincibility will allow you to "steal" Devil Room items.Judas' Tongue sets the price of all Devil Room items to 1 heart container, but all soul heart deals will remain the same.Eternal Hearts are ignored when making deals, and they will remain when Isaac's health is set to 0.Without any heart containers, the gameplay functions exactly like ?, making red hearts and red heart-related items useless until more heart containers are obtained, along with other special effects such as Whore Of Babylon always being active.If the player has Soul Hearts and buys an item for exactly as many red heart containers as they currently have, Isaac will keep his Soul Hearts.If the player has Soul Hearts and buys an item for more red heart containers than they currently have, Isaac will lose all heart containers and Soul Hearts, and will die from a single hit until more Soul Hearts or heart containers are collected.If the player has no Soul Hearts and buys an item for exactly as many or more red heart containers than they currently have, Isaac will die.When playing as ?, all items will cost 3 Soul Hearts.The costs will always take the exact cost in red heart containers and consumes all soul hearts when you try to overspend, except when playing as ? for whom the costs are converted to soul hearts. The reason ? permanently gains the effect is because he doesn't get red hearts. If ? picks this up, he permanently gains its effects upon leaving the room for the remainder of the game. he will stay in that form until leaving a room with more than a half-heart (soul hearts do not count.)

If you have a half-heart left, a message reading "What a horrible night to have a curse." appears on the screen and the player becomes the Whore of Babylon If you meant the Whore of Babylon, it only activates based on remaining red hearts: I'm not sure what the "Whore Of Babylon Door" is. The only exception is that Devil Room transactions adapt to use soul hearts when playing as ?. Both Whore of Babylon and Devil Room transactions only care about red hearts.
