Bone Spurs - The Binding of Isaac

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Bone Spurs is an unlockable passive item in The Binding of Isaac, added in the Repentance DLC.

Enemies spawn 1-2 floating bones upon death, which block enemy shots and damage/repel enemies that touch them.

Bones can block up to 2 shots and/or deal 2 ticks of damage before breaking.

Bones deal damage equal to Isaac's damage in the moment they were created.

Has a 1% chance of being dropped upon defeating Carrion Queen.

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.

Defeat Mother as The Forgotten.

Bone Spurs can be found in the following item pools:

Name	Weight
Treasure Room	1.0/1.0
Greed Treasure Room	1.0/1.0

The following tags are applied to this item:

Id	Description
summonable	Can be summoned via Lemegeton.
offensive	Can appear for Tainted Lost.

The following special synergies and interactions for Bone Spurs have been documented.

Mod	Item	Synergy
---	BFFS!	×2 damage.
---	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.

Below is the Internal Item Description as shown in-game.
Note that some stat changes are not displayed here. Please see the main description for the full effects.

Bone Spurs

• Enemies leave behind 1-2 floating bone shards on death which damage other enemies that touch them
• Abyss: x1 bone locust 1x Isaac's damage