Abyss

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

Effects

 * When used, destroys all items on item pedestals in the room and gives Isaac a unique red locust familiar for each item destroyed.
 * These locusts are permanent once created, except that there are a maximum of 64, after which creating more will replace older locusts.
 * This limit is shared with blue flies and blue spider.
 * The locusts loosely follow Isaac around and charge in the direction Isaac is firing until they hit an enemy, a wall, or certain obstacles like key blocks, dealing Isaac's damage per tick (3 times per second).
 * The locusts may gain additional effects depending on the item destroyed.

Special Locusts

 * / : A pale blue, electric locust that is otherwise normal.
 * : A red locust that deals double damage.
 * : A gray, larger locust that is otherwise normal.
 * / / : A green locust that poisons enemies.
 * : A red locust that is larger and deals triple damage.
 * : An orange, burning locust that sets enemies on fire.
 * : Two gray locusts that deal half damage.
 * : A cyan, glowing locust that occasionally calls down beams of light on enemies they hit that deal 3x Isaac's damage.
 * : Three normal locusts.
 * : A large, slow, green locust that deals x1.5 damage and poisons enemies.
 * : Four normal locusts.
 * : A yellow locust that is faster, deals damage more quickly, but has shorter range.
 * : A purple locust that homes in on enemies.

Synergies

 * / : Increases the size of the locusts, and damage by 25%.
 * These two items do not stack.
 * : Abyss can be used to absorb items without being kicked out of the area, allowing Isaac to instantly gain max locusts if used in a large room with enough items.
 * Extension Cord: Electricity will flow between Isaac and the locusts.

Interactions

 * Baby-Bender: Does not affect locusts.
 * : Locusts will only gain +2 damage from ipecac.
 * : Locusts can be sacrificed for items.

Trivia

 * The way that Abyss works is similar to how it's described in the Book of Revelation, where locusts emerge from the Abyss and are controlled by Apollyon.
 * The swirl in 's appearance is in the opposite direction of Abyss's.
 * The way the flies summoned by Abyss function is similar to the Flash Version of Isaac