Soulspike Devourer
Huge shadow humanoid (undead)
Level 20 Elite Soldier (Leader) XP 5600

Initiative +11        Senses Perception +15; Darkvision
Soulspike Ward aura 10; the soulspike devourer and all allies in the aura gain a bonus to all defenses equal to one-half the number of soulspiked spirits impaled on the creature.
HP 376; Bloodied 188
AC 38; Fortitude 37, Reflex 29, Will 34
Immune disease, poison; Resist 20 necrotic; Vulnerable 10 radiant (when the soulspike devourer takes radiant damage its newest soulspiked spirit gets a saving throw to escape)
Saving Throws +2
Speed 6
Action Points 1

(⚔) Claw (standard, at-will)

Reach 3; +26 vs AC; 2d8+9 damage. If the attack reduces a humanoid living target to 0 hit points or fewer, the target disappears and becomes a soulspiked spirit impaled on the devourer (see Soulspiked Spirit below).

ᗕ Soul Shatter (standard, recharges when the soulspike devourer uses devour spirit) ✦ Necrotic

Close burst 3; +24 vs Will; 5d8+8 necrotic damage, and the target is stunned until the end of the soulspike devourer's next turn. Aftereffect: The target is weakened (save ends).

Devour Spirit (standard; at-will) ✦ Healing

The soulspike devourer instantly kills its oldest soulspiked spirit and regains 75 hit points. A creature's dead body appears in a space adjacent to the devourer.

Soulspiked Spirit

The soulspike devourer begins the encounter with one soulspiked spirit and can impale up to four soulspiked spirits. A soulspiked spirit can take no actions and escapes when the devourer is destroyed. When a creature's spirit escapes, its body appears in an unoccupied space adjacent to the devourer, in the same state it was in when it disappeared.

Alignment Evil        Languages Common
Str 29 (+19)      Dex 8 (+9)      Wis 11 (+10)
Con 20 (+15)      Int 20 (+15)      Cha 26 (+18)

Description: When a soulspike devourer slays a creature, the victim's body vanishes, and its apparition appears impaled on one of the devourer's spikes. The soulspike devourer feeds on these spirits, which howl in agony and disappear in a flash when finally consumed.

Published in Monster Manual, page(s) 69.