Builder’s Gate

Updated 2026-09-27

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Monster Codex

BossAberration · Act 3

The Unbreakable Will of the Netherbrain

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Hit points · HP
300
Armour class · AC
15
Level
20
Difficulty
Strength
16+3
Dexterity
10+0
Constitution
22+6
Intelligence
28+9
Wisdom
21+5
Charisma
24+7

Attacks and skills 1

Orb of Negation
The Grand Design cannot be disrupted - manifest an orb of Netherese arcana that explodes on its turn, obliterating everything within range.
30m
Action

Traits 2

Psionic Retribution

The Netherbrain permits no interference - as a reaction to taking damage, it releases Brainquakes.

Darkness Rules

No game description available.

1 internal effects have no display name.

Initial conditions and difficulty effects 1

Chains of Karsus

The Netherbrain is too powerful for even the Momentary God's magic - Karsus' Compulsion could not dominate it completely.

The spell has instead bound the brain's will in place temporarily. To complete the domination, you must strike it down.

5 internal effects have no display name.

Statistics and references

Parentheses show changes from Balanced. HP applies initial and difficulty effects to the game base value; combat scripts and conditional effects can change it.

References