Abyss is an unlockable active item in The Binding of Isaac, added in the Repentance DLC.

Consumes all item pedestals in the room and gives a unique red locust familiar for each item consumed.

The locusts are permanent once created, and up to 64 can exists at a time. Consuming more items after this number will replace older locusts. This limit is shared with Blue Flies and Blue Spiders.

The locusts loosely follow Isaac similarly to Blue Flies, and charge in the direction he's firing until they hit an enemy, wall, or obstacle.

Locusts deal various damage 4.29 times per second, based on the consumed item's quality, and have a different size multiplier:
• Quality 0: 0.5x Isaac's damage, 0.8x size.
• Quality 1: 0.75x Isaac's damage, 0.9x size.
• Quality 2: 1x Isaac's damage, 1x size.
• Quality 3: 1.5x Isaac's damage, 1.1x size.
• Quality 4: 2x Isaac's damage, 1.2x size.

Some items, when consumed, will produce a unique locust with different behavior. Check the respective item pages to see if Abyss would create such a locust.

If at the limit of 64 locusts and multiple item pedestals are present in the room, Abyss will only consume half of the items.

Items can be consumed while the pick-up animation is playing, i.e. Isaac is holding the item above his head.

Absorbing items counts as Isaac taking them, thus will activate Boss Rush, Challenge Rooms, and similar mechanics.

If Abyss is used in a room with linked choice item pedestals, only one of them will be absorbed, while the others will vanish as if Isaac took them.

This page shows the latest information as of the new Repentance+ (Online Co-op) DLC.
To see information about this item for the previous Repentance version, check this page instead.

Defeat Delirium as Tainted Apollyon.

Abyss can be found in the following item pools:

The following tags are applied to this item:

The following special synergies and interactions for Abyss have been documented.

* Note that not all possible synergies and interactions are listed here.

Below is the Internal Item Description as shown in-game.
Note that some stat changes are not displayed here. Please see the main description for the full effects.

Abyss

• Abyss consumes all pedestal items in the current room, transforming each one into a permanent locust familiar
• Locust familiars charge across the room in whichever direction Isaac fires and deal contact damage to enemies that scales with Isaac's tear damage
• Consuming certain items with Abyss grants specialized locusts with bonus attributes
• Abyss: x16 special locusts
• Book of Virtues: x1 middle wisp - 10 hp - doesn't shoot

The following sounds are related to this item.

• Check out the item description on the external Isaac Wiki.