Jaw Bone

Treasure Room Treasure Room   (page 5, column 3, line 4)   Defeat ??? as The ForgottenJaw Bone

Jaw Bone is an unlockable passive item added in Booster Pack #5.

Effects

• Spawns a familiar that flies around the room while firing, dealing double Isaac's tear damage to enemies that come in contact.
  • When thrown, the familiar will pierce through enemies if they are killed by the familiar, but the familiar will bounce back to Isaac if the enemy is not killed.
  • The familiar can retrieve pickups like The BoomerangThrows a short-range boomerang which does a bit of damage and has a high chance to stun the enemy for 2 seconds. Can also be used to grab pickups..
  • Blocks enemy tears when stationary and when thrown.

Synergies

• BFFS!Increases the size and damage of familiars.: Familiar grows in size and does quadruple Isaac's tear damage to enemies.
• Duct TapeStops Isaac's familiars from moving.: Jaw Bone will face in the same direction as Isaac and remain stationary as opposed to trailing behind him. Jaw Bone can still be fired.

Trivia

• This item is possibly a reference to Judges 15:16 where Samson kills a thousand men with a donkey's jaw bone.
• Possibly a reference to the movie, The Frighteners, where Judge chases a ghost hound who keeps stealing his jaw bone.