Tentacle

Reach 10 ft; +22 vs. AC; 1d8 + 8 damage (3d8 + 8 damage against a dazed target), and the target is dazed (save ends).

Psychic Slime

Close burst 50 ft; targets enemies;  +20 vs. AC; 2d8 + 8 psychic damage, and the target is dazed (save ends).

Charm

Ranged 100 ft; targets a dazed humanoid; +20 vs. AC; the target is charmed (save ends). An aboleth overseer can charm only one creature at a time.

Enslave

Ranged 25 ft; targets a charmed creature; +20 vs. AC; 6d8 + 8 psychic damage. A target reduced to 0 hit points of fewer by this attack doesn't die but becomes enslaved in preparation for the Aboleth Servitor ritual. Enslaved targets are charmed, and only the death of the overseer can end this domination. Once a creature is enslaved, an aboleth overseer is free to charm other creatures.

Invisibility

The aboleth overseer and one ally within 50 ft of it turn invisible until the end of the aboleth overseer's next turn.