Bloody Penny is a trinket. It can be found by destroying special shopkeepers.
- Dark BumSpawns a familiar that follows Isaac around and collects red hearts. For every one-and-a-half red hearts collected, Dark Bum will generate one soul heart, one hostile Spider or one friendly blue spider. - Collecting money will lead to an abundance of soul hearts.
- Piggy BankGives 3 pennies on pick-up. Every time Isaac is damaged, he will drop one additional penny. - Isaac can recover half the health lost and make money by doing so.
- Fanny PackHas a chance to drop a random pickup when Isaac takes damage. - A less effective version of the Piggy Bank combo.
- Blood Bank/ IV BagUpon activation, Isaac loses a half-heart (one whole heart in The Womb onwards) for a random amount of coins, similar to the blood donation machine. - Isaac can use the hearts gained to donate even more health for extra rewards.
- Midas' TouchEnemies that touch you are stunned and turn gold. Any enemy killed while in this state will drop a coin. - Allows Isaac to compensate for the damage on touch by turning coins into health.
- Bloody Penny is part of the group of penny-themed trinkets, including the Burnt PennyGives a 50% chance to drop a bomb when money is collected., Butt PennyIsaac will fart when he picks up a coin., Counterfeit PennyGives a 50% chance of increasing the value of every coin pickup by one., Flat PennyGives a 50% chance of spawning a key upon collecting a penny., Rotten PennySpawns a blue fly every time a coin is picked up. and Swallowed PennyUpon taking damage, Isaac drops a penny..