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Illithilich
- STR
- 11 (+0)
- DEX
- 16 (+3)
- CON
- 16 (+3)
- INT
- 20 (+5)
- WIS
- 14 (+2)
- CHA
- 16 (+3)
If the illithilich fails a saving throw, it can choose to succeed instead.
If it has a phylactery, a destroyed illithilich 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.
The illithilich has advantage on saving throws against any effect that turns undead.
The illithilich has advantage on saving throws against spells and other magical effects.
The illithilich's innate spellcasting ability is Intelligence (spell save DC 20). It can innately cast the following spells, requiring no components.
At will: detect thoughts, levitate
1/day each: dominate monster, plane shift (self only)
The illithilich 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
Level 1 (4 slots): detect magic, magic missile, shield, thunderwave
Level 2 (3 slots): detect thoughts, invisibility, Melf's acid arrow, mirror image
Level 3 (3 slots): animate dead, counterspell, dispel magic, fireball
Level 4 (3 slots): blight, dimension door
Level 5 (3 slots): cloudkill, scrying
Level 6 (1 slots): disintegrate, globe of invulnerability
Level 7 (1 slots): finger of death, plane shift
Level 8 (1 slots): dominate monster, power word stun
Level 9 (1 slots): power word kill
Actions
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.
Melee Weapon Attack: +12 to hit, reach 5 ft., 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 Intelligence saving throw or be stunned until this grapple ends.
Melee Weapon Attack: +12 to hit, reach 5 ft., one incapacitated humanoid grappled by the lich. Hit: 55 (10d10) piercing damage. If this damage reduces the target to 0 hit points, the lich kills the target by extracting and devouring its brain.
The illithilich magically emits psychic energy in a 60-foot cone. Each creature in that area must succeed on a DC 18 Intelligence 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
Legendary Action Uses: 3. Immediately after another creature’s turn, this creature can expend a use to take one of the following actions; it regains all expended uses at the start of each of its turns.
The illithilich makes one attack with its tentacles.
The illithilich uses Extract Brain.
The illithilich recharges its Mind Blast and uses it.
The illithilich uses a spell slot to cast a 1st-, 2nd-, or 3rd-level spell that it has prepared. Doing so costs 1 legendary action per level of the spell.
Lair Actions
On initiative count 20 (losing initiative ties), the illithilich can take a lair action to cause one of the following magical effects; the illithilich can't use the same effect two rounds in a row:
- The illithilich rolls a d8 and regains a spell slot of that level or lower. If it has no spent spell slots of that level or lower, nothing happens.
- The illithilich targets one creature it can see within 30 feet of it. A crackling cord of negative energy tethers the illithilich to the target. Whenever the illithilich takes damage, the target must make a DC 18 Constitution saving throw. On a failed save, the illithilich takes half the damage (rounded down), and the target takes the remaining damage. This tether lasts until initiative count 20 on the next round or until the illithilich or the target is no longer in the illithilich's lair.
- The illithilich calls forth the spirits of creatures that died in its lair. These apparitions materialize and attack one creature that the illithilich can see within 60 feet of it. The target must succeed on a DC 18 Constitution saving throw, taking 52 (15d6) necrotic damage on a failed save, or half as much damage on a success. The apparitions then disappear.
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Source: Volo's Guide to Monsters, p. 172 - Licenses and attribution