Can only be wrecked by bombs, and it has an opportunity to drop souls hearts as opposed to cash/hearts/bombs. Everytime you pick up a coin, there is a probability a bomb will probably be spawned. Unlocked by beating Problem 13. His mom reacts by throwing him right into a closet, https://cashmlxgs.dm-blog.com/28603141/the-binding-of-isaac-liberty-cap-no-further-a-mystery