Builder’s Gate

Updated 2026-09-27

한국어

Monster Codex

Rank unconfirmedMind Flayer · Act 3

Illithid Arcanist

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Hit points · HP
55
Armour class · AC
15
Level
8
Difficulty
Strength
11+0
Dexterity
12+1
Constitution
12+1
Intelligence
19+4
Wisdom
17+3
Charisma
17+3

Attacks and skills 8

Levitate
Float effortlessly to a destination.
18m
Movement Speed 4
Magic Missile
Level 1 spell
Shoot 6 magical darts, each dealing 1d4+1 Force damage. They always hit their target.
30m
Action
Possible damage typesForce
Shield
Level 1 spell
When you are about to be hit by an enemy, increase your Armour Class by 5. You take no damage from Magic Missile.
Action
Counterspell
Level 3 spell
Try to stop a spell being cast.
18m
Reaction
Mind Flayer Domination
Level 4 spell
Dominate a nearby humanoid. Allies are unaffected.
18m Intelligence saving throw
Action concentration
Extract Brain
Try to extract the brain of a Stunned or Unconscious creature.
1.5m
Action
Possible damage typesPiercing
Tentacle Whip
Lash out with your tentacles and possibly Stun your target.
1.5m
Action
Possible damage typesPsychic
Mind Blast
Spew forth a conical wave of psychic energy and possibly Stun targets within.
Intelligence saving throw
Action
Possible damage typesPsychic

Traits 5

Opportunity Attack

Automatically attack an enemy moving out of your reach.

Empowered Evocation

Your grasp of Evocation magic has tightened, and you can add your Intelligence Modifier to damage rolls with any Evocation spells.

Fire Shield: Chill

Deal 2d8 Cold damage to melee attackers.

Magic Resistance

Has Advantage on Saving Throws against spells and other magical effects.

Darkness Rules

No game description available.

Initial conditions and difficulty effects 1

Fire Shield: Chill

Wreathed in ice-cold flames.

Affected entity sheds light in a 3m radius, has Resistance to Fire damage, and deals 2d8 Cold damage to anyone who hits it with a melee attack.

1 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.