Illithilich (5e)

 5th edition Varied 
SRD5, VGtM, MM5e

a.k.a. Mind Flayer Lich

Illithilich [SRD5 OGL/CC-BY]
Medium Undead (Liches, Mind Flayers), Any evil alignment
Armor Class: 17 (natural armor)
Hit Points: 135
Speed: 30 ft.
STR DEX CON INT WIS CHA
Saving Throws: Con, Int, Wis
Skills: Arcana, History, Insight, Perception
Damage Resistances: cold, lightning, necrotic
Damage Immunity: poison; bludgeoning, piercing, and slashing from nonmagical attacks.
Condition Immunity: charmed, exhaustion, frightened, paralyzed, poisoned
Senses: truesight 120 ft., passive Perception 19
Languages: Deep Speech, Undercommon, telepathy 120 ft.
Habitat: Underdark, Underground, Urban
Plane: Underdark
Challenge: 22 (41,000 xp)Proficiency Bonus (PB): +7
Features Innate Spellcasting (Psionics, Intelligence). Legendary Resistance (3/Day). If the lich fails a saving throw, it can choose to succeed instead. Magic Resistance. The lich has advantage on saving throws against spells and other magical effects. Rejuvenation. If it has a phylactery, a destroyed lich gains a new body in 1d10 days, regaining all its hit points and becoming active again. The new body appears within 5 feet of the phylactery. Spellcasting. The lich is an 18th-level spellcaster. Its spellcasting ability is Intelligence (spell save DC 20, +12 to hit with spell attacks). The lich has the following wizard spells prepared: Cantrips (at will): mage hand, prestidigitation, ray of frost 1st level (4 slots): detect magic, magic missile, shield, thunderwave 2nd level (3 slots): acid arrow, detect thoughts, invisibility, mirror image 3rd level (3 slots): animate dead, counterspell, dispel magic, fireball 4th level (3 slots): blight, dimension door 5th level (3 slots): cloudkill, scrying 6th level (1 slot): disintegrate, globe of invulnerability 7th level (1 slot): finger of death, plane shift 8th level (1 slot): dominate monster, power word stun 9th level (1 slot): power word kill Turn Resistance. The lich has advantage on saving throws against any effect that Turn Undead|turns undead.  Actions Extract Brain. Melee Weapon Attack Mind Blast (Recharge 5-6). Paralyzing Touch. Melee Spell Attack: +12 to hit, reach 5 ft., one creature. Hit: 10 (3d6) cold damage. The target must succeed on a DC 18 Constitution 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 Spell Attack  Legendary Actions The undead can take 3 legendary actions, choosing from the options below. Only one legendary action option can be used at a time and only at the end of another creature’s turn. The undead regains spent legendary actions at the start of its turn. Tentacles. The lich makes one attack with its Tentacles. Extract Brain (Costs 2 Actions). The lich uses Extract Brain Mind Blast (Costs 3 Actions). The lich recharges its Mind Blast and uses it. Cast Spell (Costs 1-3 Actions).

Unofficial Description: Mind Flayer that has become a Lich.

Lich's Lair

 A lich lairs in a lonely tower, a haunted ruin, secret tomb, or an academy of black magic.

Lair Actions

 When fighting inside its lair, an lich can use lair actions. On initiative count 20 (losing initiative ties), the undead takes a lair action to cause one of the following effects; the undead can’t use the same effect two rounds in a row:

• Regain Spell Slot
• Negative Energy Binding (redirects damage)
• Summon Apparitions

A mind flayer lich encountered in its lair has a challenge rating of 23 (50,000 XP).

Sources and Notes

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