Multiattack. Qunbraxel makes two Eldritch Bolt attacks, or one Eldritch Bolt attack and one Tentacle attack.

Tentacle. Melee Weapon Attack: +8 to hit, reach 5 ft., one creature. Hit: 15 (2d10 + 4) psychic damage. If the target is Medium or smaller, it has the grappled condition (escape DC 16) and must succeed on a DC 16 Intelligence saving throw or have the stunned condition until the grapple ends.

Eldritch Bolt. Ranged Spell Attack: +8 to hit, range 120 ft., one target. Hit: 20 (3d10 + 4) force damage.

Extract Brain. Melee Weapon Attack: +8 to hit, reach 5 ft., one Humanoid with the stunned condition who is grappled by Qunbraxel. Hit: 55 (10d10) piercing damage. If this damage reduces the target to 0 hit points, Qunbraxel kills it by extracting and devouring its brain.

Mind Blast (Recharge 5–6). Qunbraxel magically emits psychic energy in a 60-foot cone. Each creature in that area must succeed on a DC 16 Intelligence saving throw or take 26 (5d8 + 4) 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.