Wasting Hunger

Dark rituals were used in the creation of these undead; but it is not clear if their creation was the purpose or an unfortunately side effect.

Wasting Hunger CR: 6

Medium undead, chaotic evil
Armor Class: 14 (natural Armor)
Hit Points: 70 (10d8+30)
Speed: 30 ft , burrow: 20 ft

STR

17 +3

DEX

15 +2

CON

16 +3

INT

3 -4

WIS

8 -1

CHA

4 -3

Saving Throws: Con +6, Str +6
Skills: Athletics +6, Acrobatics +5
Damage Vulnerabilities: radiant
Damage Resistances: Bludgeoning, Piercing, and Slashing from Nonmagical Attacks that aren't Silvered
Damage Immunities: Poison, Cold
Condition Immunities: poisoned, exhaustion, charmed
Senses: darkvision 120 ft.
Languages: understands the languages it knew in life but can’t speak
Challenge Rating: 6

Essence Drain. When the Wasting Hunger downs an enemy it can drain the enemy's life energy. If you are using the Erthos World Setting, there is a 25% chance that the Wasting Hunger takes 1 Essence Reservoir Chamber. If you are not using the Erthos World Setting, there is a 25% chance that the downed character starts with 1 death saving throw.   Incessant Hunger. If the wasting hunger does not deal damage to a character once during its turn it takes 1d6 damage at the end of its turn.   Relentless Pursuit. The Wasting Hunger can still make opportunity attacks against creatures that use the disengage action.   Soul Sucking Aura. At the start of the Wasting Hunger's turn, any creature within 5 ft of it must make a DC 14 Constitution Saving throw. On a failure, they take 1d4 necrotic damage and the Wasting Hunger heals half that amount.

Actions

Multiattack. The Wasting Hunger makes 2 claw attacks and one grasping mouth attack.   Claw. Melee Weapon Attack +6 to hit, 5 ft., 1 target, 6 (1d6+3) slashing damage.   Grasping Mouth. Ranged Weapon Attack: +4 to hit, range 30/60 ft., one target. Hit: 6 (1d8 + 2) piercing damage plus the target must make a Constitution saving throw DC 13. On a failure they take 1d6 necrotic damage and the wasting hunger heals that amount of damage.

Wasting Hungers are undead who have been starved of Essence through some dark ritual and seek to take whatever Essence they can.