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How to Free the Intellect Devourer
Baldur's Gate 3

How to Free the Intellect Devourer

Learn how to free the Intellect Devourer in Baldur's Gate 3. Discover the best methods, skill checks, and consequences for aiding this creature during the prologue.

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Learn how to free the Intellect Devourer in Baldur's Gate 3. Discover the best methods, skill checks, and consequences for aiding this creature during the prologue.

Walkthrough
  1. 1
    After waking up on the Nautiloid Ship, interact with the "Neural Apparatus" in the second room to activate a lift.
  2. 2
    Ride the lift to the second floor and proceed north to find the corpse of Myrnath (around x=2, y=436).
  3. 3
    Listen for a voice and examine Myrnath's corpse. You may need to pass a Perception check to locate the source.
  4. 4
    Engage in dialogue and ask "Who am I talking to - a man or a brain?" to trigger an Arcana check. A successful check identifies the Intellect Devourer.
  5. 5
    You have the option to destroy the brain immediately by choosing "Destroy the brain."
  6. 6
    To free the Intellect Devourer, choose one of the following methods:
    • Investigation & Medicine: Pass a DC 10 Investigation check by inspecting the exposed brain. This may reveal a complication, unlocking a DC 10 Medicine check to attempt a cerebral extraction with Advantage.
  7. 7
    Strength: Pass a DC 10 Strength check to break the skull.
  8. 8
    Dexterity: Pass a DC 10 Dexterity check to gently prise the brain from the skull.
  9. 9
    After freeing the brain, you can choose to sabotage it with a DC 15 Dexterity check ("Mutilate the brain"). Failing this check will cause the Intellect Devourer to attack.
  10. 10
    If you choose not to sabotage it (e.g., by selecting "Spare the creature - any injuries might weaken it."), the Intellect Devourer, named Us, will offer to accompany you to the helm.
Tips
  • The DC 15 Dexterity check to "Mutilate the brain" is difficult for early characters and carries a high risk of combat if failed.
  • If Us is not provoked, it will have a "Newborn" debuff for 5 turns, reducing its HP, Armor Class, and giving it Disadvantage on Attack Rolls. This makes it easier to manage.
  • Once the "Newborn" debuff fades, Us's stats improve significantly (11 HP to 21 HP, AC 7 to 12).
  • Having Us accompany you can significantly ease the prologue, especially for ranged characters and spellcasters, as it can draw enemy attention.
An allied Intellect Devourer (Us) that assists in combat and navigation during the prologue.

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