Medium Aberration, Lawful Evil
Armor Class 15 (natural armor)
Hit Points 225 (30d8 + 90)
Speed 30 ft., Fly 60 ft. (hover)
STR
18 (+4)
DEX
17 (+3)
CON
16 (+3)
INT
27 (+8)
WIS
19 (+4)
CHA
19 (+4)
Saving Throws INT +14, WIS +10, CHA +10
Skills Arcana +7, Deception +6, Insight +6, Perception +6, Persuasion +6, Stealth +4
Senses Darkvision 120 ft., Passive Perception 20
Languages Deep Speech, Telepathy 120 ft., Undercommon
Challenge 20 (25,000 XP)
Proficiency Bonus +6
Traits

Innate Spellcasting (Psionics). Valak is a 20th-level spellcaster. Its innate spellcasting ability is Intelligence (spell save DC 22; +16 to hit with spell attacks). It can innately cast the following spells, requiring no components:

At will: guidance, mage hand, prestidigitation, ray of frost, vicious mockery

1st level (4 slots): charm person, detect magic, magic missile, shield

2nd level (3 slots): crown of madness, mirror image, phantasmal force, see invisibility

3rd level (3 slots): counterspell, dispel magic, lightning bolt

4th level (3 slots): confusion, dimension door

5th level (3 slots): scrying, telekinesis

6th level (2 slots): disintegrate, globe of invulnerability

7th level (2 slots): finger of death, plane shift

8th level (1 slot): dominate monster, feeblemind

9th level (1 slot): power word kill

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

Precognition. Valak’s psychic prowess allows him glimpses into possible futures. He can take 3 reactions a round, but can’t take the same reaction on back to back turns.

Psychic Disruption (Aura). Creatures within 120ft of Valak have disadvantage on concentration checks made to maintain spells.

Psychic Reverberation. When Valak is reduced to 0 hit points, the creature that dealt the killing blow must succeed on a DC 20 Intelligence saving throw or take 53 (10d8 + 8) psychic damage on a failure, half damage on a successful save. If the creature targets by this ability is farther than 300ft away from Valak, they automatically succeed on their saving throw.

Telekinetic Flight. Valak uses his psychic powers to maintain a flying speed. This does not require concentration and Valak’s can remain flying similarly to a beholder.

Actions

Tentacles. Melee Weapon Attack: +16 to hit, reach 5 ft., one creature. Hit: 19 (2d10 + 8) psychic damage. If the target is Medium or smaller, it is grappled (escape DC 20) and must succeed on a DC 20 Intelligence saving throw or be stunned until this grapple ends.

Extract Brain. Melee Weapon Attack: +16 to hit, reach 5 ft., one incapacitated humanoid grappled by Valak. Hit: The target takes 105 (10d20) piercing damage. If this damage reduces the target to 0 hit points, Valak kills the target by extracting and devouring its brain.

Psionic Repulsion. All creatures within 15ft of Valak must succeed on a DC 20 Strength saving throw or take 21 force damage and be thrown back 30ft and knocked prone on a failed save. On a success, creatures take half damage and are not knocked prone.

Mind Blast (Recharge 5–6). Valak emits psychic energy in a 90-foot cone. Each creature in that area must succeed on a DC 20 Intelligence saving throw or take 35 (6d8 + 8) 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.

Psychic Obliteration (1/day). Valak sends forth an unrelenting wave of devastating psychic energy that affects all creatures within 60ft of Valak. Affected creatures take 60 psychic damage reduced by their Intelligence score.

Bonus Actions

Psychic Rebound (5/day). Valak sends a shockwave of psionic energy through the minds of his disabled prey. All creatures within 120ft of Valak, and also within 30ft of an incapacitated creature, must make a DC 20 Intelligence saving throw or take 26 (4d8 + 8) psychic damage and cannot take reactions until the start of their next turn. On a successful, save creatures take half damage and can take reactions normally. Creatures who are incapacitated are immune to this ability.

Reactions

Negate Spell (3/Day). When Valak sees a creature within 60 feet casting a spell, it tries to interrupt it. If the creature is casting a spell using a spell slot of 8th level or lower, its spell fails and has no effect. If it is casting a 9th-level spell, it must succeed on a DC 20 Intelligence saving throw, or the spells fails and has no effect.

Reactive Ward (1/day). When Valak takes damage, he uses his reaction to psychically enhance his muscles. This grants him 50 temporary hit points, and while the temporary hit points remain, he has a +6 bonus to his armor class.

Repelling Force. Whenever a creature moves within 30ft of Valak, it must succeed on a DC 20 Strength saving throw or they’re stopped by an unseen psychic force. Their speed becomes 0 until the start of their next turn.

Psionic Deflection. When Valak is hit by an attack he can see, he can use his reaction to create a psionic barrier adding +6 to his armor class against that attack, potentially turning a hit into a miss.

Monster Tags: Mind Flayer

Habitat: Underdark

TaAj88

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