The Emperor/Combat

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This page focuses on the Emperor's behavior during turn-based combat gameplay. This page is a list of information, rather than a guide. Please refer to separate pages for full combat guides.

The Emperor possesses a number of illithid abilities commonly used by other mind flayers, and in some encounters will have other unique abilities with special functions.

Actions and Abilities[edit | edit source]

Class Actions[edit | edit source]

Tentacle Whip Tentacle Whip

Mind Blast.webp
D8 Psychic.png 4d8 (4~32) Damage TypesPsychic damage

Spew forth a conical wave of psychic energy and possibly Stun Stun targets within.
INT Save
AoE: 14 m / 47 ft (Cone)
Shield of Thralls.webp

Conjure a volatile shield around yourself or an ally, granting the target HP Icon.png 10 temporary hit points.
 Range: 9 m / 30 ft
Dominate Person.webp

Dominate a nearby humanoid. Allies are unaffected.

Each time the dominated creature takes damage, it may repeat the Saving throw against your domination.

INT Save
 Range: 18 m / 60 ft
Generic Multiattack.webp
D10 Piercing.png 10d10 (10~100) Damage TypesPiercing damage
D6 Healing.png 6d6 (6~36) hit points

Try to extract the brain of a Stunned or Unconscious creature.
 Melee: 1.5 m / 5  ft
Fly Illithid Power.webp

Float effortlessly to a destination.
 Range: 18 m / 60 ft

Spells[edit | edit source]

Sleep Sleep ()

Put creatures into a magical slumber. Select targets up to a combined 24 Hit Points.
 Range: 18 m / 60 ft
Slow Slow ()

Alter time around up to 6 enemies to Slow them. They won't get far, they can't do much, and they're easier to hit.
WIS Save
 Range: 18 m / 60 ft
Evard's Black Tentacles.webp
D6 Bludgeoning.png 3d6 (3~18) Damage TypesBludgeoning damage

Tentacles sprout from the ground, turning the area into Difficult Terrain Difficult Terrain, attacking and Smothering Smothering creatures within.
STR Save
 Range: 18 m / 60 ft
AoE: 6 m / 20 ft (Radius)

Throw a creature or object up to 18 m / 60 ft with a thought. Once per turn, you can use Telekinesis again without expending a Spell Slot.
STR Save
 Range: 18 m / 60 ft
Chain Lightning.webp
D8 Lightning.png 10d8 (10~80) Damage TypesLightning damage

Strike an enemy with lightning. Three more bolts will leap from the target, electrifying as many as three other enemies within range.
DEX Save
 Range: 18 m / 60 ft
Karsus' Compulsion.webp

Channel the stones' magic to control the Crown of Karsus and dominate the Netherbrain.

The caster must channel channel this spell until their next turn for it to take effect.

 Range: 6 m / 20 ft

Common Actions[edit | edit source]

Dash Dash ()

Cover more distance this turn: double your Movement Speed.
Disengage Disengage ()

Focus on retreating safely. Moving won't provoke Opportunity Attacks.
 Range: Self
Hide Hide ()

Try to conceal yourself.

Hiding depends on your Stealth and whether you are Obscured. Attacking or casting spells reveals your location.

 Range: Self
Jump Jump ()

Jump to a destination.

Your Strength affects how far you can jump.

 Range: 4.5 m / 15 ft

Weapon Actions[edit | edit source]

Topple Topple ()
D4 Bludgeoning.png 1d4 (1~4) Damage TypesBludgeoning damage

Swipe at a creature to knock it Prone.
DEX Save
 Range: Normal weapon range

Conditions[edit | edit source]

This information is not specified on The Emperor's Examine page, but has resulted from contributor testing. If this information varies depending on whether The Emperor is hostile, allied, or neutral, then please specify this in the applicable section.

Immunities[edit | edit source]

Immunities include Conditions that, according to in-game UI messages, cannot be afflicted onto this character. Conditions that are not explicit "Immune to" messages can still go in this section, but please provide more detail about what combat actions are prevented.

The Emperor is immune to all of the following Conditions:

Vulnerabilities[edit | edit source]

Vulnerabilities include specific named Conditions that can be afflicted onto this character, even if the chance of successfully afflicting this condition on the character is really, really low.

The Emperor can be affected by all of the following Conditions:

  • Sluggardly
  • Shredded Armour

Encounters[edit | edit source]

This section is a list of specific combat encounters where The Emperor gets added into the initiative, and any specific differences about how The Emperor can behave in each combat encounter.

Astral Plane[edit | edit source]

This encounter is triggered by the quest Help Your Protector during Act Three.

  • Even if friendly, the player cannot control his actions like a companion or summon.
  • When the Emperor takes enough damage, they will use at least one Potion of Superior Healing. Up to 2 of these potions are available but using them here means the Emperor will not have them during later encounters.


  • If The Emperor's hit points reach 0, the combat encounter immediately ends and a cutscene triggers. This results in a "Game Over" screen.

The Upper City[edit | edit source]

When it is finally time to Confront the Elder Brain, the Emperor can proceed as the player's ally during this final mixture of open-world and combat gameplay. The Emperor will be attached to one character like a summon for the duration of this experience.

  • When The Emperor's hit points reach 0, they will become "downed" like any other controllable ally, and will make death saving throws.

Atop the Netherbrain[edit | edit source]

Ally[edit | edit source]

  • The Emperor can be downed, and can die, but revivify and resurrection methods are allowed. On death then resurrection, for some reason, any unused potions of angelic reprieve will be dropped on the ground.[Needs Verification]
  • The Emperor is capable of casting spells off of some, but not all scrolls, if players open up the group inventory screen while the Emperor is actively selected, and right-mouse-clicks on the scroll item (PC Platforms only). The criteria allowing or disallowing the use of a scroll is unclear.

Enemy[edit | edit source]

  • As an enemy, the Emperor will start combat with the Volatile Shield Volatile Shield condition.

Notes and References[edit | edit source]