Corpse Mother

Gargantuan construct, neutral evil

Armor Class 15 (natural armor)
Hit Points 162 (12d12 + 84)
Speed 20 ft.

24 (+7) 9 (-1) 25 (+7) 1 (-5) 1 (-5) 10 (+0)

Damage Immunities lightning, poison, psychic; bludgeoning, piercing, and slashing from nonmagical attacks that aren’t adamantine
Condition Immunities charmed, exhaustion, frightened, paralyzed, petrified, poisoned
Senses darkvision 90 ft.
Languages understands telepathic commands but can’t speak
Challenge 11 (7,200 XP)


  • Immutable Form. The corpse mother is immune to any spell or effect that would alter its form.
  • Lightning Absorption. Whenever the corpse mother is subjected to lightning damage, it takes no damage and instead regains a number of hit points equal to the lightning damage dealt.
  • Magic Weapons. The corpse mother’s weapon attacks are magical.


  • Slam. Melee Weapon Attack: +7 to hit, reach 30 ft., one target. Hit: 20 (3d8 + 7) bludgeoning damage.
  • Spawn Undead. The corpse mother produces its choice of one restless (page 151) or three human zombies or six shambling fragments (page 153) in unoccupied locations within 15 feet of the corpse mother.


The corpse mother can take 3 legendary actions, choosing from the options below. Only one legendary action option can be used at a time and only at the end of another creature’s turn. The corpse mother regains spent legendary actions at the start of its turn.

  • Hurl Forth (Costs 3 Actions). The corpse mother moves up to its speed and uses Spawn Undead.
  • Slam. The corpse mother makes a slam attack.
  • Spawn Undead (Costs 2 Actions). The corpse mother uses Spawn Undead.


A large mass of corpses collected into the shape of a humanoid. Bodies and body parts drop off the collected mass every few seconds.

The corpse mother is a unique construct made from hundreds of corpses. The constructs collects bodies where it finds them, adding them to its own body as it gathers the dead. Corpse mothers defend themselves with deadly force when their work might be interrupted.

Section 15: Copyright Notice

Sandy Petersen’s Planet Apocalypse, © 2021, Petersen Games.

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