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Seetangeist

Creature 12 (uncommon) — aquatic, mindless, swarm, undead, unholy

Pre-Remaster content. May include legacy alignment.

WeaverCrasherAQUATICundeadunholy

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 t

Source: book-of-the-dead-bestiary (Pre-Remaster)

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 (void healing)
Immunities bleed, death-effects, disease, paralyzed, poison, precision, prone, unconscious, mental
Resistances bludgeoning 5, cold 10, fire 10, slashing 10, piercing 10
Weaknesses area-damage 10, splash-damage 10
Speed 0 feet, swim 40 feet

Abilities

Wavesense (Imprecise) 100 feet — This sense allows a monster to feel vibrations caused by movement through a liquid. It's an imprecise sense with a limited range (listed in the ability). Wavesense functions only if monster and the subject are in the same body of liquid, and only if the subject is moving through the liquid.
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.
Void Healing — A creature with void healing draws health from void energy rather than vitality energy. It is damaged by vitality damage and is not healed by vitality healing effects. It does not take void damage, and it is healed by void effects that heal undead.
Putrid Assault — Each enemy in the seetangeist's space takes 3d6 slashing plus 3d6 poison{3d6 slashing and 3d6 poison damage} (DC 32 Reflex). A creature that fails this save also takes 1d12 persistent poison.

WORKS WELL WITH

CrasherAQUATICCrasher pushes enemies into the swarm's space where Putrid Assault and Necrotic Runoff compound pressure on forced groupings.
SniperAQUATICRanged damage finishes targets that flee the swarm's area or stay beyond the Necrotic Runoff aura.
ShadeAQUATICStealthy pick-off eliminates isolated enemies the swarm cannot efficiently envelop.

PUNISHES

✖ clumping✖ melee reliance✖ low Fortitude
Weaver stack dilutes the single controlling presence a water-locked swarm can project.
Works well with · Punishes · Pairing advice Unlock with Tactics

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Stat block data sourced from the Foundry VTT PF2E system under the Apache License 2.0. Source book: Pathfinder Book of the Dead.

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