Refraction of Ilvaash

Huge aberration (mind flayer), lawful evil

Armor Class

11 (natural armor)

Hit Points

199 (21d12 + 63)

Speed

10 ft., fly 30 ft.(hover), swim 10 ft.

Saves

wis +10, int +11

Skills

persuasion +11, insight +15, arcana +11, intimidation +11

Damage Resistances

bludgeoning, piercing, and slashing from nonmagical attacks

Damage Immunities

poison, psychic

Condition Immunities

exhaustion, grappled, paralyzed, petrified, poisoned, prone, restrained

Senses

blindsight 120 ft.

Languages

Common, Deep Speech, telepathy 100 miles, Undercommon

Challenge

15

Proficiency Bonus

+5

Creature Sense

The refraction is aware of creatures within 100 miles of it that have an Intelligence score of 4 or higher. It knows the distance and direction to each creature, as well as each one's Intelligence score, but can't sense anything else about it. A creature protected by a mind blank spell, a nondetection spell, or similar magic can't be perceived in this manner.

Incorporeal Movement

The refraction can move through other creatures and objects as if they were difficult terrain. It takes 5 (1d10) force damage if it ends its turn inside an object.

Legendary Resistance (5/Day)

If the refraction fails a saving throw, it can choose to succeed instead.

Magic Resistance

The refraction has advantage on saving throws against spells and other magical effects.

Actions

Multiattack

The refraction makes two Dissonant Claw attacks.

Dissonant Claw

Melee Weapon Attack: +11 to hit, reach 10 ft. or range 120 ft., one creature. Hit: 25 (3d12 + 6) psychic damage. If the target is a creature concentration on a spell, its concentration is broken.

Mind Blast (Recharge 5-6)

Creatures of the refraction's choice within 60 feet of it must succeed on a DC 19 Intelligence saving throw or take 33 (5d10 + 6) psychic damage and have the stunned condition for 1 minute. A stunned creature can repeat the saving throw at the end of each of its turns, ending the effect on itself on a success.

Spellcasting (Psionics)

The refraction casts one of the following spells, requiring no spell components and using Intelligence as the spellcasting ability (spell save DC 19): • At will: detect magic, detect thoughts • 3/Day each: dispel magic, modify memory • 1/Day each: feeblemind, plane shift (self only)

Teleport

The refraction teleports, along with any equipment it is wearing or carrying, up to 120 feet to an unoccupied place that it can see.

Legendary actions

Legendary Actions (3/Turn)

The Refraction of Ilvaash can take 3 legendary actions, choosing from the options below. Only one legendary action can be used at a time and only at the end of another creature's turn. The Refraction of Ilvaash regains spent legendary actions at the start of its turn.

Mindbreaker

The refraction targets a creature within 120 feet of itself and disrupts its mental processes, causing the target to have disadvantage on all ability checks, attack rolls, and saving throws until the end of the target's next turn.

Projected Claw (Costs 2 Actions)

The refraction makes one Dissonant Claw attack.