Blightwalker

Keen Hearing: The blightwalker has advantage on Perception checks based on hearing.

Hive Mind: Theblightwalker can use a bonus action to emit a loud shriek, allowing it to detect any creatures within a 30 ft. radius that is not behind total cover. If any creatures are detected, all otherblightwalkers within 200 ft. are also made aware of the same information. This allows them to coordinate and move in on their prey with deadly precision.

Infectious: If a creature is killed by the necrotic damage caused by a blightwalker's Bite attack, and its body remains intact, it will rise as ablightwalker the next night, becoming blind within 1d4 days, and being able to use its Hive Mind trait at that point.

Multiattack. The blightwalker uses one Claw and one Bite attack.

Claw. Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit: 13 (3d6 + 3) slashing damage.

Bite. Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit: 14 (2d10 + 3) piercing damage and 4 (1d6) necrotic damage. The target must succeed on a DC 14 Constitution saving throw or become infected. The infection causes the target to take 1d10 necrotic damage at the beginning of their turn. The target can repeat the saving throw at the end of its turn to end this effect.