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

Psionic Mastery: Xonthal can cast spells using his Intelligence modifier. He can cast the following spells, requiring no material components:

• At will: Detect Thoughts, Levitate
• 3/day each: Dominate Monster, Plane Shift (self only), Telekinesis
• 1/day each: Feeblemind, Mind Blank

Multiattack: Xonthal makes three attacks with his tentacles.

Tentacles: Melee Weapon Attack: +8 to hit, reach 5 ft., one target. 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 17 Intelligence saving throw or be stunned until this grapple ends.

Extract Brain: Melee Weapon Attack: +8 to hit, reach 5 ft., one incapacitated humanoid grappled by Xonthal. Hit: The target takes 55 (10d10) piercing damage. If this damage reduces the target to 0 hit points, Xonthal kills the target by extracting and devouring its brain.

Mind Blast (Recharge 5-6): Xonthal magically emits psychic energy in a 60-foot cone. Each creature in that area must succeed on a DC 17 Intelligence saving throw or take 27 (5d8 + 5) psychic damage and be stunned for 1 minute. A stunned target can repeat the saving throw at the end of each of its turns, ending the effect on itself on a success.

Psionic Step: Xonthal can teleport up to 30 feet to an unoccupied space he can see.

Quick Alchemy: Xonthal can use a bonus action to quickly mix a potion or throw an alchemical substance. This can create one of the following effects:

• Healing Draught: Xonthal heals 2d8 hit points.
• Acid Flask: Target creature within 30 feet must make a DC 15 Dexterity saving throw or take 2d6 acid damage.
• Smoke Bomb: Xonthal creates a cloud of smoke in a 10-foot radius centered on him. The area is heavily obscured until the start of his next turn.

Psionic Shield: When Xonthal is hit by an attack, he can use his reaction to gain a +5 bonus to his AC until the start of his next turn.