Binding of Isaac: Rebirth Wiki
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(in Repentance)

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

Effects[ | ]

  • 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 any of the same monster 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.

Notes[ | ]

  • 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 Boss Hush ingameHush or Boss Ultra Greed ingameUltra Greed, erasing the first phase skips any further phases.
  • Has no effect on invincible enemies, such as Stone GrimaceStone Grimaces, lowered HostHosts, or Eternal FlyEternal Flys.
  • BulbBulbs can steal charges from the Eraser.
  • If Eraser's projectile hits an enemy's projectile that has collision with Isaac's tears and isn't considered an enemy (e.g. Fire WormFire Worm's fire, Coal BoyCoal Boy's coal, Big BonyBig Bony's thrown bone) it has no effect and Eraser's projectile will be destroyed .
  • Although the thrown Eraser cannot hit friendly enemies these enemies can still be erased if their hostile variants are erased. This also means that when effects such as Collectible Friend Finder iconFriend Finder attempts to spawn an erased enemy it only creates the brief puff of pink smoke wasting the effect.
  • Erased enemies will remain erased if a Victory Lap is started.
    • Erased enemies will also remain erased if items such as Collectible R Key iconR Key or Collectible Genesis iconGenesis are used.
  • Entities such as Ultra Greed Coin (Spinner)Ultra Greed Coins or Boss Little Horn ingameLittle Horn's Dark BallDark Balls are considered enemies and can be erased.
  • It is possible to erase ChubberChubber's launched Charger, rendering it unable to attack.
  • Erasing PoltyPoltys will render Haunted ChestHaunted 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, Boss Delirium ingameDelirium will disappear if it attempts to turn into that boss. This will spawn the ending chest and count as having defeated Delirium.
  • Erased enemies don't grant exploration bonuses in Daily Challenges.

Synergies[ | ]

  • ? Card? Card: Can throw an additional Eraser.
  • Collectible Angelic Prism iconAngelic Prism: Throwing the Eraser through the Angelic Prism will cause it to split into four.
  • Collectible The Battery iconThe Battery: The eraser can gain an extra charge if it is not used on one floor.
  • Character Bethany iconBethany / Character Tainted Bethany iconTainted Bethany: Soul and blood charges can be used with the Eraser, allowing multiple uses per floor.
  • Collectible Blood Puppy iconBlood 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.
  • Collectible Book of Virtues iconBook 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.
  • Collectible Void iconVoid: An eraser can be thrown with each use of Void after absorbing it, allowing multiple uses per floor.
  • Character Tainted Lazarus iconTainted Lazarus: Enemies erased in one form will still be erased when Tainted Lazarus flips.

Interactions[ | ]

  • Collectible 9 Volt icon9 Volt / Collectible Battery Pack iconBattery Pack: Item doesn't fully charge the Eraser when picked up.
  • Collectible Car Battery iconCar Battery: No effect.
  • Collectible Kidney Stone iconKidney Stone / Collectible Number One iconNumber One / Collectible Pluto iconPluto / Collectible Inner Child iconInner Child's revive: Lowers the Eraser's range drastically and can only be improved with tear height ups.
  • Collectible My Shadow iconMy Shadow / Collectible Shade iconShade: Erasing a ChargerCharger will prevent all newly created friendly Chargers from spawning, rendering the item useless as this item spawns a normal Charger before changing it to the special My Shadow variant.
  • Collectible Sharp Plug iconSharp Plug: Attempting to recharge the Eraser with the Sharp Plug hurts Isaac for half a heart without recharging the item.
  • Collectible Habit iconHabit: Taking damage with Habit will not charge Eraser.

In-game Footage[ | ]

Trivia[ | ]

  • 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 "Erase your enemies!".
  • This item's effect is similar to the scroll of genocide that appears in traditional roguelikes such as NetHack, originating in the Hack variant Hack121.

Bugs[ | ]

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.


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