Binding of Isaac: Rebirth Wiki

Added in Repentance

Eraser is an activated item added in The Binding of Isaac: Repentance.


  • On use, Isaac holds an Eraser above his head, which can be thrown in any cardinal direction. Upon hitting a monster, the monster will be "erased", preventing it from appearing for the rest of the run.
    • Deals 15 damage to bosses. If fatal, erases the boss for the rest of the run.
  • Can only be recharged by entering a new floor. Batteries and most other methods of recharging have no effect.


  • Erased enemies and bosses appear as a brief pink puff of smoke. Any on-death effects are not checked.
    • The Seven Deadly Sins minibosses and Angels will still drop their respective pickups or items.
    • If used on multistage bosses like Hush Hush or Ultra Greed Ultra Greed, erasing the first phase skips any further phases.
  • Has no effect on invincible enemies, such as Stone Grimace Stone Grimaces, lowered Host Hosts, or Eternal Fly Eternal Flys.
  • Bulb Bulbs can steal charges from the Eraser.
  • Erased enemies will remain erased if a Victory Lap is started.
    • Erased enemies will also remain erased if items such as R Key R Key or Genesis Genesis are used.
  • Entities such as Ultra Greed Coins or Little Horn Little Horn's Dark Ball Dark Balls are considered enemies and can be erased.
  • It is possible to erase Charger Chargers, rendering Chubber Chubbers unable to attack.
  • Erasing Polty Poltys will render Haunted Chest Haunted Chests harmless, but may make some rooms impossible to complete without bombs or flight as they rely on a Polty clearing a path.
  • Each floor traveled up during the Ascent will recharge the Eraser.
  • If a boss earlier in the run is removed via Eraser, Delirium Delirium will disappear if it attempts to turn into that boss. This will spawn the ending chest and count as having defeated Delirium.


  • ? Card ? Card: can throw an additional Eraser.
  • Angelic Prism Angelic Prism: Throwing the Eraser through the Angelic Prism will cause it to split into four.
  • The Battery The Battery: The eraser can gain an extra charge if it is not used on one floor.
  • Bethany Bethany / Tainted Bethany Tainted Bethany: Soul and blood charges can be used with the Eraser, allowing multiple uses per floor.
  • Blood Puppy Blood Puppy: Throwing the Eraser at an enraged Blood Puppy (second stage) will 'erase' its enraged form, keeping it permanently tame.
    • Throwing the Eraser at its third stage will make it cycle through its normal and second stage as it kills enemies.
  • Book of Virtues Book of Virtues: Spawns a pink eraser wisp on the middle ring. The wisp is immune to projectiles. If a non-boss enemy touches the wisp, it is erased and the wisp is destroyed. The wisp cannot erase bosses, regardless of how much health they have left.
  • Glowing Hour Glass Glowing Hour Glass: Using Glowing Hour Glass to return to the previous floor will keep the charge Eraser received from entering the next floor.
  • Void Void: An eraser can be thrown with each use of Void after absorbing it, allowing multiple uses per floor.
  • Tainted Lazarus Tainted Lazarus: Enemies erased in one form will still be erased when Tainted Lazarus flips.


  • 9 Volt 9 Volt / Battery Pack Battery Pack: Item doesn't fully charge the Eraser when picked up.
  • Book of the Dead Book of the Dead / Friend Finder Friend Finder / Mystery Egg Mystery Egg / Poke Go Poke Go / Polished Bone Polished Bone: Enemies spawned by these items will not spawn if that type was erased, potentially rendering them useless.
  • My Shadow My Shadow: Erasing a Charger Charger will prevent all newly created friendly Chargers from spawning, rendering the item useless. The item spawns a normal Charger before changing it to the special My Shadow variant.
  • Number One Number One: Lowers the Eraser's range drastically, making the item much more difficult to use. Range increases do not negate this.
  • Sharp Plug Sharp Plug: Attempting to recharge the Eraser with the Sharp Plug hurts Isaac for half a heart without recharging the item.

In-game Footage[]


  • Eraser originates from the Antibirth mod. In Antibirth, this item was single use and wouldn't permanently remove an erased boss from the run, but could kill any boss in one hit.
    • The Pickup quote was also "Erase your enemies!".


Bug Bug! If this item kills Dogma during its first phase, it will treat the room as a regular room clear, dropping a consumable, but with no doors to walk out of, softlocking the room. However, this will not occur if you erase the television, instead skipping straight to its second phase. If used on the second phase, Isaac will also be stuck in the boss room.
Bug Bug! Using this item to erase the chain of The Visage will make the boss unkillable.
Bug Bug! If used to kill the Mom's Heart leading to Corpse, it will not count it as a kill, preventing progress on the path.
Bug Bug! If used when playing as Tainted Forgotten holding the skull over the ghost's head, the eraser acts like shooting the character's skull, preventing the item from correct behavior (as the character cannot be removed) and making the item unusable this way.