Returned Kakomantis

If another creature deals damage to the Returned, the Returned makes attack rolls with advantage until the end of its next turn.

The Returned has advantage on saving throws against any effect that turns undead.

The Returned is immune to any effect that would sense its emotions or read its thoughts. Wisdom (Insight) checks to ascertain the Returned's intentions or sincerity are made with disadvantage.

Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit: 6 (1d6 + 3) piercing damage plus 10 (3d6) poison damage.

Ranged Spell Attack: +4 to hit, range 120 ft., one creature. Hit: 13 (2d8 + 2) necrotic damage, and the target can't regain hit points until the start of the Returned's next turn. If the target is missing any of its hit points, it instead takes 17 (2d12 + 2) necrotic damage.