|Sell Creep Price:||41|
|Play Well, Get Hearts|
|Extra chance for hearts on room clear.|
Heart Synthesizer is a passive item.
- If the player is not at full health, adds a 20% chance to gain half a heart upon completing a room without taking damage.
- If Heart Synthesizer triggers, it will spawn a half-heart on top of the player.
- Synthetic Shield - If the player has Armor Synthesizer or Ammo Synthesizer, grants a familiar that orbits the player and blocks shots. If all three synthesizers are picked up, grants three familiars.
- Heart Synthesizer has no benefit for The Robot, as he cannot use hearts. It still does, however, contribute to the synergy mentioned above.