


Like Abaddon, this item is always safe to take. Ceremonial Robes costs three two Soul Hearts and grants three Black Hearts and damage up.Book of Revelations Spawns soul hearts.The XI - Strength card gives ? a permanent soul heart.The Rune of Dagaz grants one soul heart as well as lifting any curses.Balls of Steel pills or V - The Hierophant grant two soul hearts, both of which are more useful than normal HP up items.Athame can be used to produce black hearts upon taking damage.GB Bug and D20 can be used to reroll any red hearts that may drop into useful pickups.Abaddon will give 2 black hearts on pickup, essentially refunding the cost to obtain the item from a Devil Room.Abaddon can be bought safely regardless of current health, because its price can be deducted from the acquired Black Hearts retroactively. Abaddon costs three Soul Hearts and grants six Black Hearts, damage up, fear shot, and no negative effects to ?.Birthright: Soul Hearts gained from health ups will be doubled.This means that, along with The Poop, the potential flies gained per room increases exponentially with players, with the formular simply being the amount of ?'s in game to the second power. A possibly unintended effect is that this stacks multiple ?'s in true coop.


