Kryx RPGThemesMonsters

Mind Flayer Lich (Illithilich)

Medium undead
22 (41,000 XP)


Defense note natural armor
Damage resistances cold, lightning, necrotic
Damage immunities poison; bludgeoning, piercing, and slashing from nonmagical attacks
Condition immunities charmed, exhausted, frightened, paralyzed, poisoned

Speed 9 m.
Senses truesight 35 m., passive Perception 19
Skills Deception +10, Insight +9, Perception +9, Persuasion +10, Psionics +15, Stealth +10
Languages Aklo, Undercommon, telepathy 35 m.

Legendary Resistance (3/Day). If the illithilich fails a saving throw, it can choose to succeed instead.

Magic Resistance. The illithilich has advantage on saving throws against spells and other magical effects.

Rejuvenation. If it has a phylactery, a destroyed illithilich gains a new body in 1d10 days, regaining all its health and becoming active again. The new body appears within 1.5 meters of the phylactery.

Spellcasting. The mind flayer lich (illithilich) is a 28th-level spellcaster. Its spellcasting ability is Intelligence (spell save DC 20, +12 to hit with spell attacks). It has 42 mana, a mana limit of 7, regains all expended mana when it finishes a long rest and regains half its total mana when it finishes a short rest, and knows the following spells:

At will: detect thoughts, levitate

Cantrips (at will): blind spot, catapult, chill touch, death blade, distract, floating object, life siphon, message, mind thrust, minor telekinesis, reanimating word, scythe, toll the dead

1 mana: absorb spirit, agonizing rebuke, animate dead, animate objects, blight, bone armor, call to mind, confusion, consumptive field, detect magic, disable, disguise, ego whip, enervation, false life, force shield, giant crawling claw, haze senses, hover, immovable object, inertial armor, inflict wounds, invisibility, invisibility, kinetic assault, kinetic barrier, kinetic grasp, kinetic retort, kinetic shield, life drain, life transference, meld mindcrystal, mind over body, mind spike, mind trap, path to the grave, psychic fortress, ray of enfeeblement, sending, sense minds, telekinesis, telekinetic charge, teleport, thought shield, wall bind, wandering mind

2 mana: antilife shell, aphasia, blur, circle of death, clairvoyance, cloudkill, co-opt concentration, control undead, counterspell, death ward, defer death, detect thoughts, dispel magic, feign death, finger of death, gentle repose, gravitational well, hold creature, inertial barrier, inertial wall, kinetic explosion, kinetic onslaught, mind blast, mind control, mirror image, modify memory, personality parasite, psychic crush, psychic reformation, share pain, speak with dead, synaptic static, telepathic bond, tiny servant, touchsight, wall of bones

3 mana: animate flesh, antimagic sphere, control body, death clutch, entangling debris, grasping hands, plane shift, power word pain, power word stun, reverse gravity, schism, solicit mindcrystal, symbol of death/pain, symbol of insanity

4 mana: clone, feeblemind

5 mana: mind seed

1/day: plane shift (self only)

Turn Resistance. The illithilich has advantage on saving throws against any effect that turns undead.


Paralyzing Touch. Melee Spell Attack: +12 to hit, reach 1.5 m., one creature. Hit: 10 (3d6) cold damage. The target must succeed on a DC 18 Fortitude saving throw or be paralyzed for 1 minute. The target can repeat the saving throw at the end of each of its turns, ending the effect on itself on a success.

Tentacles. Melee Weapon Attack: +12 to hit, reach 1.5 m., one creature. Hit: 21 (3d10 + 5) psychic damage. If the target is Large or smaller, it is grappled (escape DC 15) and must succeed on a DC 20 Will saving throw or be stunned until this grapple ends.

Extract Brain. Melee Weapon Attack: +12 to hit, reach 1.5 m., one incapacitated humanoid grappled by the lich. Hit: 55 (10d10) piercing damage. If this damage reduces the target to 0 health, the lich kills the target by extracting and devouring its brain.

Mind Blast (Recharge 5–6). The illithilich magically emits psychic energy in a 18-meters cone. Each creature in that area must succeed on a DC 18 Will saving throw or take 27 (5d8 + 5) 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.

Legendary Actions

The mind flayer lich (illithilich) can take 3 legendary actions, choosing from the options below. Only one legendary option can be used at a time and only at the end of another creature’s turn. The mind flayer lich (illithilich) regains spent legendary actions at the start of its turn.

Cast Spell. The illithilich uses a spell slot to cast a 1 or 2 mana spell that it knows. Doing so costs 1 legendary action per mana of the spell.

Extract Brain (Costs 2 Actions). The illithilich uses Extract Brain.

Mind Blast (Costs 3 Actions). The illithilich recharges its Mind Blast and uses it.

Tentacles. The illithilich makes one attack with its tentacles.