Jaw Bone

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

Effects

 * Spawns a familiar that fires across the room in the direction of the first tear fired and returns to Isaac when it hits a wall, similar to . Deals a flat 7 damage to enemies that come in contact with it.
 * 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 pass through obstacles.
 * The familiar can retrieve pickups like.
 * Blocks enemy tears when stationary and when thrown.
 * After returning to Isaac, it has a short recharge time before it can be fired again.

Synergies

 * : Familiar grows in size and does a flat 14 damage to enemies.
 * n: 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.
 * Jaw Bone is possibly a reference to the movie, The Frighteners, where Judge chases a ghost hound who keeps stealing his jaw bone.