Eraser

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

Effects

 * Throwing the Eraser erases the first enemy it hits, despawning all enemies of that type for the rest of the run.
 * Deals 15 damage to bosses. If fatal, erases the boss for the rest of the run.

Synergies

 * Throwing the Eraser through the Angelic Prism will cause it to split into four.
 * / : Soul and blood charges can be used with the Eraser, allowing multiple uses per stage.
 * 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.
 * : Using Glowing Hour Glass to return to the previous stage will keep the charge Eraser received from entering the next stage.
 * Although difficult to accomplish, successfully dealing the final blow to Dark Esau with the Eraser will remove him for the rest of the run. Tainted Jacob will not be turned into Lost mode.
 * An eraser can be thrown with each use of Void after absorbing it, allowing multiple uses per floor.

Interactions

 * : Erasing a Charger will prevent all newly created friendly Chargers from spawning, rendering the item useless. This is because of the fact that My Shadow spawns a normal Charger first, after which it changes its variant to the special My Shadow one.
 * : Attempting to recharge the Eraser with the Sharp Plug fails and only hurts Isaac for half a heart.