Multiattack. make one greatclub and one Evil Eye, or two greatclub attacks
Greatclub. Melee Weapon Attack: +9 to hit, reach 15 ft., one target. Hit: 19 (3d8 +6) bludgeoning damage.
Evil Eye. Creatures visible within 60 ft., DC 14 Charisma saving throw for psychic damage, half on successful save. , for 27 (6d8) psychic damage in 60 ft.