Cephalosk, Mind Flayer Psion

Magical Resistance. The mind flayer has advantage on saving throws against spells and other magical effects.

Innate Spellcasting (Psionics). The mind flayer's innate spellcasting ability is Intelligence (spell save DC 15). It can innately cast the following spells, requiring no components.

At will: detect thoughts, levitate, mage hand, vicious mockery, true strike

1/day each: dominate monster, dominate person (does not require concentration)

1st level (4 slots): charm person, command, comprehend languages, sanctuary

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

3rd level (3 slots): clairvoyance, fear, meld into stone

4th level (3 slots): confusion, stone shape

5th level (2 slots): scrying, telekinesis (range 90 ft.)

Tentacles. Melee Weapon Attack.: +7 to hit, reach 5ft., one creature. Hit: 15 (2d10+4) psychic damage. If the target is Medium or smaller, it is grappled (escape DC 15) and must succeed on a DC 15 Intelligence saving throw or be stunned until this grapple ends.

Extract Brain. Melee Weapon Attack.: +7 to hit, reach 5 ft. one incapacitated humanoid grappled by the mind flayer. Hit: 55 (10d10) piercing damage. If this damage reduces the target to 0 hit points, the mind flayer kills the target by extracting and devouring its brain.

Mind Blast (Recharge 5-6). The mind flayer magically emits psychic energy in a 60-foot cone. Each creature in that area must succeed on a DC 15 Intelligence saving throw or take 22 (4d8+4) 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.