B'aualacam

Psychic Sense The B'aualacam has advantage on Wisdom (Perception) checks to find creatures with an intelligence score greater than 5 within 120ft . (creatures that are found by the B'aualacam cannot hide as long as they are within 120ft.)

Aura of fatigue. Any creature other than a B'aualacam that starts its turn within 5 feet of the B'aualacam must succeed on a DC 13 Constitution saving throw or take 1 point of exhaustion. On a successful saving throw, the creature is immune to the aura of any B'aualacam for 1 hour.

Punch. Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit: 18 (4d6 + 4) bludgeoning damage, and the target must succeed on a DC 16 Constitution saving throw or be stunned until the start of the B'aualacam next turn.

Death Ray (Recharge 5-6). The B'aualacam targets a creature that it can see within 120 feet of it. The target must make a DC 14 Intelligence saving throw, taking 20 (3d12) psychic damage on a failed save, or half as much damage on a successful one. If the saving throw fails by 5 or more, the target instead takes 30 psychic damage. The target dies if reduced to 0 hit points by this ray.