Claw

Melee Weapon Attack: +7 to hit, reach 5 ft., one target. Hit: 5 (1d4 + 3) slashing damage plus 10 (3d6) poison damage.

Chaos Pheromones

The khalkos emits a cloud of pheromones in a 20-foot radius. The cloud spreads around corners. Each non-khalkos creature in the area makes a DC 14 Intelligence saving throw. Creatures with an alignment trait make this save with disadvantage. On a failure the creature is confused for 1 minute. It repeats the saving throw at the end of each of its turns ending the effect on itself on a success. If the creature makes its saving throw or the condition ends for it it is immune to Chaos Pheromones for the next 24 hours.

Psionic Sting

The khalkos targets a creature within 30 feet forcing it to make a DC 16 Intelligence saving throw. On a failure the target takes 28 (8d6) psychic damage and is stunned until the end of its next turn.