Bone Spurs

Bone Spurs is a passive item added in The Binding of Isaac: Repentance.

Effects

 * Enemies spawn 1-2 floating bones on death, which block enemy shots and damage/repel enemies that touch them.
 * Bones block 2 shots and/or deals 2 ticks of damage before breaking.
 * Bones deal contact damage equal to Isaac's damage in the moment they were created.
 * This means that if the damage stat was changed, the bones that were already present on the screen will use Isaac's old damage stat.

Synergies

 * : Doubles the bones' size and damage.
 * : Boosts the bones' damage while spinning even though there's no visual tell of the effect.

Trivia

 * A bone spur is a bony growth that often occurs close to joints and can have a multitude of causes from joint damage from osteoarthritis to excessive overuse of said joints.