Scimitar

Melee Weapon Attack: +6 to hit, reach 5 ft., one target. Hit: 7 (1d6 + 4) slashing damage.

Shriek (Recharge 5-6)

The chernomoi emits a loud shriek. All creatures within 60 feet who can hear take 10 (3d6) thunder damage, or half damage with a successful DC 13 Constitution saving throw.