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(in Afterbirth † and Repentance)

Lil Delirium is an unlockable passive item added in The Binding of Isaac: Afterbirth † (Booster Pack #1).

Effects[ | ]

  • Grants a familiar that transforms into another random familiar every 10 seconds.
    • The familiars it turns into are normal familiars that look white and melted like Boss Delirium ingameDelirium.
    • Familiars deal the same damage as their normal non-Delirium counterparts.
    • Familiars will not do contact damage.

Notes[ | ]

  • Lil Delirium can transform into the following familiars:
  • Lil Delirium can transform into the same familiar multiple times in a row and therefore stay in the same form for more than 10 seconds.
  • Every time Lil Delirium transforms from a free-floating familiar to a follower one, it positions itself at the end of the familiar train.
  • Lil Delirium can damage Isaac when transformed into BBF or Bob's Brain.
  • (in Repentance) Familiars that follow behind Isaac have a certain priority in how close their position is to him over other familiars. Lil Delirium starts at 4th priority regardless of the familiar it transforms into as long as it starts as a familiar that follows behind Isaac. When Lil Delirium changes out of a familiar that follows behind Isaac; its priority resets and becomes equal to its next form (e.g. having 2nd priority when its next form is Lil Delirium Incubus). Changing from one following familiar to another will not change priorities.
  • (in Repentance)Collectible Monster Manual iconMonster Manual can spawn Lil Delirium, which functions as normal.

Synergies[ | ]

  • Collectible Box of Friends iconBox of Friends: The copy of Lil Delirium will be a different random familiar.

In-game Footage[ | ]

Trivia[ | ]

Bugs[ | ]

Bug Bug! When entering a new floor or room, Lil Delirium and a normal familiar you have can swap forms as long as Lil Delirium is currently transformed as that familiar. For example, if you have Collectible Lil Brimstone iconLil Brimstone and Lil Delirium, Lil Brimstone will become Lil Delirium's form, while Lil Delirium will look normal. This persists for the other familiar, but Lil Delirium will go back to normal. This also works if you pick up the familiar Lil Delirium is transformed as.[Check ingame]


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