The Jar is an activated item.
Effects
- Isaac can store up to 4 extra red hearts in the jar if there are no remaining empty Heart Containers.
- When used, all hearts in the jar are dropped on the floor, rather than directly consuming them.
Notes
- Red hearts are the only type of heart that can be stored. Blended Hearts do not count.
- If used in a Black Heart or Eternal Heart-containing Super Secret Room, it will spawn those types of hearts instead.
- If a whole red heart is picked up and Isaac only heals half a heart container, the other half is placed in the jar indicated by the jar number increasing by one. Despite the jar indicating that it picked up a whole red heart in this fashion, it will only drop half a red heart on use. When picking up a double red heart, the jar will also store the remainder not healed in the same way.
- Co-op babies, except Magnet Baby, cannot add hearts to the jar as they are unable to interact with pickups.
The Jar will retain its hearts inside the Schoolbag, but the player cannot pick up more hearts while it is inside the Schoolbag.
The Jar will retain its hearts inside the Schoolbag, but the player cannot pick up more hearts while it is inside the Schoolbag.Synergies
- Error: The given collectible ("Humbling Bundle") does not exist./Maggy's Bow: Spawn double the hearts put into the jar, allowing for infinite health to be spawned.
Interactions
- Broken Remote: Allows for teleportation with no recharge; however, it drops the contained red hearts in the room it was used.
- Car Battery: The Jar acts as usual, and doesn't double the hearts dropped upon activation.
In-game Footage
Gallery
Concept drawn for The Jar.
3DS The icon of The Jar as seen on the lower 3DS screen.
 The Binding of Isaac: Rebirth
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