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Seetangeist Creature12

Uncommon NE Huge Aquatic Mindless Swarm Undead

Perception +19; darkvision, wavesense (imprecise) 100 feet

Skills Athletics +22

Str +4, Dex +4, Con +7, Int -5, Wis +3, Cha +2

AC 32; Fort +25, Ref +22, Will +19

HP 160, negative healing; Immunities death effects, disease, mental, paralyzed, poison, precision, prone, unconscious; Weaknesses area 10, splash damage 10; Resistances bludgeoning 5, cold 10, fire 10, slashing 10, piercing 10

Necrotic Runoff (aura, poison) 60 feet. A seetangeist secretes foul fluids into the surrounding water, poisoning it. A creature that enters or starts its turn in the aura must succeed at a DC 29 Fortitude save or become sickened 2 (sickened 3 on a critical failure). Creatures that breathe water take a –2 circumstance penalty to this saving throw. As long as a creature remains in the aura, it can’t reduce its sickened condition below 1. A creature that succeeds at its save is temporarily immune for 1 minute.

Speed swim 40 feet

Putrid Assault [one-action] Each enemy in the seetangeist’s space takes3d6 slashing and 3d6 poison damage (DC 32 basic Reflex save). A creature that fails this save also takes 1d12 persistent poison damage.


Seetangeists are composed of the bloated corpses of marine life, encrusted with bleached coral and wrapped in rotting seaweed. Although occasionally created by water-breathing necromancers, seetangeists most often arise when an aquatic ecosystem collapses, resulting in the deaths of countless creatures. Bound by spiritual trauma, these corpses merge together, forming a writhing school of flesh and decaying plant matter that seeks out and consumes what life remains in the region.

The disasters that lead to the creation of seetangeists are typically caused by mortal interference: overhunting, ecological overexploitation, pollution, or necromantic magic and experimentation.

Section 15: Copyright Notice

Pathfinder Book of the Dead © 2022, Paizo Inc.; Authors: Brian Bauman, Tineke Bolleman. Logan Bonner, Jason Bulmahn, Jessica Catalan, John Compton, Chris Eng, Logan Harper, Michelle Jones, Jason Keeley, Luis Loza, Ron Lundeen, Liane Merciel, Patchen Mortimer, Quinn Murphy, Jessica Redekop, Mikhail Rekun, Solomon St. John, Michael Sayre, Mark Seifter, Sen.H.H.S., Kendra Leigh Speedling, Jason Tondro, Andrew White.