Carric Drailo's Husk

Undead Fortitude. If damage reduces the husk to 0 Hit Points, it makes a Constitution saving throw (DC 5 plus the damage taken) unless the damage is Radiant or from a Critical Hit. On a successful save, the husk drops to 1 Hit Point instead.

Spellcasting. The husk is a 3rd-level spellcaster that uses Charisma as its spellcasting ability (spell save DC 12; +4 to hit with spell attacks). The husk knows the following spells from the sorcerer's spell list:

Cantrips (at will): green-flame blade, poison spray

1st Level (4 slots): chaos bolt, thunderwave

2nd Level (2 slots): hold person, misty step

Multiattack. The husk makes two longsword attacks. 

Longsword. Melee Attack Roll: +5, reach 5 ft. Hit: 6 (1d8 + 3) slashing damage. If the target is a non-Undead creature, it is subjected to the following effect. Constitution Saving Throw: DC 12. Failure: The target has the Paralyzed condition until the end of its next turn.

Seek Soul. The husk attempts to complete itself once more by reaching for the soul of another. It chooses one creature within 5 ft who is paralyzed, grappled, or otherwise incapacitated. The creature must make a DC 15 wisdom saving throw or take 3d6 necrotic damage. The husk then regains hit points equal to half the damage taken. If a creature is reduced to 0 hit points in this way, they instantly die as their soul gets sucked out of them and into the husk. The creature who died becomes a husk in 1d4 hours. If the dying creature had more maximum hit points than the husk does, the husk then falls to 0 hit points and becomes a corpse.