Home >Creatures >

Oni, Water Yai

Water Yai Creature17

CE Huge Fiend Giant Humanoid Oni Water

Senses Perception +32; greater darkvision

Languages Common, Jotun

Skills Acrobatics +30, Arcana +29, Athletics +33, Deception +32, Intimidation +32, Nature +29, Performance +33

Str +9, Dex +6, Con +6, Int +5, Wis +9, Cha +6

Items +2 greater striking longspear

AC 40; Fort +27, Ref +29, Will +34; +1 status on all saves vs. magical

HP 295, regeneration 15 (deactivated by acid and fire); Immunities electricity

Attack of Opportunity [reaction]

Shocking Douse [reaction] Trigger A creature within 100 feet casts a fire spell; Effect The water yai flourishes their kimono and attempts a Performance check to counteract the spell before it comes into effect. If the yai counters the spell, the triggering creature takes 9d6 electricity damage from electrified water that sprays from the kimono (DC 35 basic Reflex save).

Speed 40 feet, fly 40 feet, swim 50 feet; water walk

Melee [one-action] longspear +35 (evil, magical, reach 20 feet), Damage 3d8+15 piercing plus 2d6 electricity

Melee [one-action] kimono +33 (electricity, evil, magical, reach 15 feet), Damage 3d12+12 electricity plus Enveloping Kimono

Melee [one-action] fist +33 (agile, evil, magical, reach 15 feet), Damage 3d8+15 bludgeoning plus 2d6 electricity

Ranged [one-action] electric missile +30 (electricity, evil, magical, range increment 60 feet), Damage 3d12+12 electricity plus flat-footed for 1 round

Primal Innate Spells DC 38; 9th chain lightning, horrid wilting; 8th hydraulic torrent; 5th control water (at will); 4th charm (-3), darkness; 2nd invisibility (at will, self only); Constant (9th) water walk

Change Shape [one-action] (concentrate, polymorph, primal, transmutation) As onidoshi, but into a storm giant. The yai can also turn into a puddle of water, with the effects of gaseous form except they retain their land Speed, double their swim Speed, and can’t fly.

Enveloping Kimono [one-action] (electricity, manipulate, primal, transmutation, water) Requirements The water yai’s last action was a successful kimono Strike; Effect The water yai extends a portion of their kimono to attempt to envelop a creature within 15 feet. The water yai must attempt a Performance check against the creature’s Reflex DC.

Critical Success The creature takes 20d6 electricity damage and is grabbed until the end of its next turn.

Success As critical success, but only 10d6 electricity damage.

Failure The target takes 5d6 electricity damage but is not grabbed.

Critical Failure The target is unaffected.


Among the most powerful yai are those who emulate the form of storm giants. Rather than lord over their giant-kin like most oni, though, water yai prefer to lurk alone in the world’s oceans (or, much more rarely, large and remote fresh- water lakes). When a water yai must interact with mortals beneath the waves, they prefer to do so while disguised as a storm giant. Water yai pursue the acquisition of material wealth and riches above all other interests, garbing themselves in richly colored, magically waterproofed kimonos and adorning their monstrous faces with all manner of jewelry. These yai can infuse their kimonos with eerie magical properties, and in combat, they can also fire bolts of electricity from their third eye.

Section 15: Copyright Notice

Pathfinder Bestiary 2 (Second Edition) © 2020, Paizo Inc.; Authors: Alexander Augunas, Dennis Baker, Jesse Benner, Joseph Blomquist, Logan Bonner, Paris Crenshaw, Adam Daigle, Jesse Decker, Darrin Drader, Brian Duckwitz, Robert N. Emerson, Scott Fernandez, Keith Garrett, Scott Gladstein, Matthew Goodall, T.H. Gulliver, BJ Hensley, Tim Hitchcock, Vanessa Hoskins, James Jacobs, Brian R. James, Jason Keeley, John Laffan, Lyz Liddell, Colm Lundberg, Ron Lundeen, Jason Nelson, Randy Price, Jessica Redekop, Patrick Renie, Alistair Rigg, Alex Riggs, David N. Ross, David Schwartz, Mark Seifter, Amber Stewart, Jeffrey Swank, Russ Taylor, and Jason Tondro.