Polished Bone

Trinket Icon
Pickup Quote	"Friends from beyond"
Entity ID	5.350.167
Unlock Method	Defeat Isaac, ???, Satan, and The Lamb as Tainted Forgotten

Polished Bone is an unlockable trinket added in The Binding of Isaac: Repentance.

Effects

• After clearing a room, adds a chance to spawn a friendly Bony / Black Bony.

Synergies

• Mom's Box / Golden Trinket: Increases the chance to spawn bonies.

Interactions

• Ace Cards: Friendly monsters are still affected by Ace Cards.
• Blood Puppy: Either version of Blood Puppy will target friendly enemies and can drag them along with it when it charges them. Blood Puppy cannot damage friendly enemies; however, friendly enemies can damage Blood Puppy despite not targeting it.
• Broken Modem: Broken Modem also affects friendly enemies and projectiles created by them.
• Eraser: Bonies erased by Eraser will never spawn again, greatly diminishing the value of Polished Bone. If Black Bonies are also erased, Polished Bone becomes useless.
• Ghost Bombs / Hungry Soul / Purgatory / Vade Retro: Explosions from ghosts can kill friendly enemies.

Bugs

Bug!	Each use of Glowing Hourglass that does not move Isaac to a different room than the one he is currently in (such as the starting room of a new floor) will duplicate friendly enemies.

The Binding of Isaac: Rebirth
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