Brutish Frenzy. The Star Spawn Brute can use a bonus action to enter a frenzy. While frenzied it takes half damage from any piercing, slashing, or bludgeoning damage.

Fanatic Advantage. Once per turn, if the Star Spawn Brute makes a weapon attack with advantage on the attack roll and hits, the target takes an extra 10 (3d6) damage.

Pack Tactics. The Star Spawn Brute has advantage on an attack roll against a creature if at least one of the Star Spawn Brute’s allies is within 5 feet of the creature and the ally isn’t incapacitated.

Multiattack. The star spawn brute attacks twice with its longsword.

Longword. Melee Weapon Attack: +9 to hit, reach 5 ft., one target. Hit: 9 (1d8 + 5) piercing damage plus 10 (3d6) psychic damage.

Psychic Scream (3/Day). Target one creature within 90 ft., the target makes a WIS save (DC 17). On fail: 27 (6d8) psychic damage, success takes half damage (13).