Medium aberration, Lawful Evil
| Armor Class | 15 (breastplate) |
|---|---|
| Hit Points | 71 (13d8 + 13) |
| Speed | 30 ft. |
| STR | DEX | CON | INT | WIS | CHA |
|---|---|---|---|---|---|
| 11 (+0) | 12 (+1) | 12 (+1) | 19 (+4) | 17 (+3) | 17 (+3) |
| Saving Throws | Cha +6, Int +7, Wis +6 |
|---|---|
| Skills | Arcana +7, Deception +6, Insight +6, Perception +6, Persuasion +6, Stealth +4 |
| Damage Vulnerabilities | — |
| Damage Resistances | — |
| Damage Immunities | — |
| Condition Immunities | — |
| Senses | darkvision 120 ft., passive Perception 16 |
| Languages | Deep Speech, Undercommon, telepathy 120 ft. |
| Challenge | 8 |
The mind flayer has advantage on saving throws against spells and other magical effects.
Melee Attack Roll: +7 to hit, reach 5 ft., one creature. Hit: 15 (2d10 + 4) psychic damage. If the target is Medium or smaller, it is grappled (escape DC 15) and must succeed on a DC 15 Intelligence saving throw or be stunned until this grapple ends.
Melee Attack Roll: +7 to hit, reach 5 ft., one incapacitated humanoid grappled by the mind flayer. Hit: The target takes 55 (10d10) piercing damage. If this damage reduces the target to 0 hit points, the mind flayer kills the target by extracting and devouring its brain.
The mind flayer magically emits psychic energy in a 60-foot cone. Each creature in that area must succeed on a DC 15 Intelligence saving throw or take 22 (4d8 + 4) psychic damage and be stunned for 1 minute. A creature can repeat the saving throw at the end of each of its turns, ending the effect on itself on a success.
The mind flayer's innate spellcasting ability is Intelligence (spell save DC 15). It can innately cast the following spells, requiring no components:
At will: detect thoughts, levitate
1 each/day: dominate monster, plane shift (self only)
The mind flayer is a 10th-level spellcaster. Its spellcasting ability is Intelligence (save DC 15, +7 to hit with spell attacks). The mind flayer has the following wizard spells prepared:
Cantrips: blade ward, dancing lights, mage hand, shocking grasp
Level 1 (4 slots): detect magic, disguise self, shield, sleep
Level 2 (3 slots): blur, invisibility, ray of enfeeblement
Level 3 (3 slots): clairvoyance, lightning bolt, sending
Level 4 (3 slots): confusion, hallucinatory terrain
Level 5 (2 slots): telekinesis, wall of force
Medium aberration, Lawful Evil
| Armor Class | 16 |
|---|---|
| Hit Points | 143 (26d8 + 26) |
| Speed | 30 ft., fly 30 ft. (hover) |
| STR | DEX | CON | INT | WIS | CHA |
|---|---|---|---|---|---|
| 11 (+0) | 14 (+2) | 13 (+1) | 20 (+5) | 17 (+3) | 17 (+3) |
| Saving Throws | Cha +7, Dex +6, Int +9, Wis +7 |
|---|---|
| Skills | Arcana +13, Insight +7, Perception +7, Stealth +6 |
| Damage Vulnerabilities | — |
| Damage Resistances | — |
| Damage Immunities | psychic |
| Condition Immunities | charmed; frightened |
| Senses | Darkvision 120 ft., passive Perception 17 |
| Languages | Deep Speech, Undercommon; telepathy 120 ft. |
| Challenge | 11 |
The mind flayer has Advantage on saving throws against spells and other magical effects.
The mind flayer makes three Arcane Tentacles attacks.
Melee or Ranged Attack Roll: +9, reach 5 ft. or range 120 ft. Hit: 27 (4d10 + 5) Psychic damage, and the mind flayer can teleport the target up to 30 feet to an unoccupied space the mind flayer can see on a surface or liquid large enough to support the target. If this damage reduces the target to 0 Hit Points, the mind flayer kills it and magically devours its brain.
int DC 17, each creature in a 40-foot Emanation [Area of Effect] originating from the mind flayer. Failure: 41 (8d8 + 5) Psychic damage, and the target has the Stunned condition until the end of the mind flayer's next turn. Success: Half damage only.
The mind flayer casts one of the following spells, requiring no spell components and using Intelligence as the spellcasting ability (spell save DC 17):
At will: Detect Magic, Detect Thoughts, Disguise Self, Mage Hand (the hand is Invisible)
1 each/day: Clairvoyance, Dimension Door, Fireball (level 5 version), Lightning Bolt (level 5 version), Plane Shift (self only), Sending
The mind flayer casts Shield in response to that spell's trigger, using the same spellcasting ability as Spellcasting.
2/day: Shield