Occasionally, items may cost Soul Hearts even if Isaac still has Red Hearts.Īny items outside of the Devil Room item pool will have a price of 1 Red Heart or 3 Soul Hearts/Black Hearts. If Isaac has no Red Heart containers, items can be bought for three Soul Hearts / Black Hearts. All items can be bought for some number of Red Heart containers. The Devil Room pool is the pool of items that can be found in the Devil Room.
