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Brittle Bones item
Brittle Bones is an unlockable passive item in The Binding of Isaac, added in the Afterbirth+ DLC.
Description
On pickup +6 
Bone Hearts.
Removes all Red Heart containers and empties all Bone Hearts.
While heldLosing any Bone heart causes Isaac to fire a ring of 8 bones that deal 22 + DamageStat damage and split into more bones that deal damage half of this amount.
Losing a Bone Heart also grants a permanent +0.4 fire rate.
No effects are applied when losing Bone Hearts via a Devil Deal or other means that don't involve directly taking damage.
Has a 1% chance of being dropped upon defeating The Frail.
Note
This page shows the latest information as of the new Repentance+ (Online Co-op) DLC.
To see information about this item for the previous Repentance version, check this page instead.
How to unlock?
Defeat The Lamb as The Forgotten.
Item pools
Brittle Bones can be found in the following item pools:
| Name | Weight |
|---|---|
| Treasure Room |
1.0/1.0
|
| Greed Treasure Room |
1.0/1.0
|
Tags
The following tags are applied to this item:
| Id | Description |
|---|---|
| offensive | Can appear for  Tainted Lost. |
| tearsup | Contributes towards unlocking  Lachryphagy. |
Special synergies
The following special synergies and interactions for Brittle Bones have been documented.
| Mod | Item | Synergy |
|---|---|---|
| --- | Abyss | Spawns a light grey locust that has a chance to shoot 2-3 bone projectiles upon impact with an enemy. Each bone projectile deals damage equal to the locust's damage. |
* Note that not all possible synergies and interactions are listed here.
External links
- Check out the item description on the external Isaac Wiki.
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