This towering woman has blue skin, small fangs, and a third eye glaring from her forehead. Her robes are soaking wet.
Water Yai CR 18
AC 32, touch 11, flat-footed 29 (+6 armor, +3 Dex, +15 natural, -2 size)
hp 297 (22d10+176); regeneration 10 (fire or good spells)
Fort +21, Ref +10, Will +18
Defensive Abilities freedom of movement; Immune acid; SR 29
Speed 50 ft., fly 60 ft. (good), swim 60 ft.
Melee mwk spear +35/+30/+25/+20 (3d6+21/19-20/x3) or 2 slams +34 (2d6+14)
Ranged acidic missile +23 (4d6 acid plus nausea)
Space 15 ft.; Reach 15 ft. (20 ft. with spear)
Spell-Like Abilities (CL 18th; concentration +24)
Constant—fly, freedom of movement, water walk
At will—invisibility (self only), liquid form (as gaseous form), water breathing
3/day—charm monster (DC 20), cone of cold (DC 21), control water, polar ray
Str 39, Dex 17, Con 27, Int 16, Wis 20, Cha 22
Base Atk +22; CMB +38 (+40 bull rush, disarm); CMD 51 (53 vs. bull rush, disarm)
Feats Awesome Blow, Blind-Fight, Cleave, Combat Expertise, Combat Reflexes, Critical Focus, Improved Bull Rush, Improved Critical (spear), Improved Disarm, Improved Initiative, Power Attack
Skills Acrobatics +21 (+29 when jumping), Bluff +27, Disguise +24, Fly +24, Intimidate +27, Knowledge (arcana) +24, Perception +26, Perform (sing) +24, Sense Motive +26, Spellcraft +21, Swim +43
Languages Common, Giant
SQ amphibious, change shape (Medium, Large, or Huge humanoid; alter self or giant form II)
As a swift action, a water yai can launch a bolt of acid from its third eye. Any creature struck by this bolt must also make a DC 29 Fortitude save to avoid becoming nauseated for 1 round by the overwhelming stench of the acid. This attack has a range of 180 feet with no range increment. The save DC is Constitution-based.
A water yai wears a special silk kimono infused with magical water. This kimono grants a +6 armor bonus. These robes function as armor only for water yai.
As a standard action, a water yai can turn into a mobile pool of water. This functions like gaseous form, except that the yai cannot fly in this form. It retains its own base speed, and its swim speed doubles to 120 feet. The water yai can end this ability as a standard action.
Environment any water
Treasure standard (masterwork spear, other treasure)
The water yai clad themselves in the flesh of storm giants, yet these yai are more at home dwelling beneath the waves than they are above them. Unlike most oni, water yai have no real longing to rule or infiltrate societies—yet they still enjoy posing as humanoids. They often assume the forms of enormous merfolk in the water, but prefer to adopt the shapes of storm giants when on land. The water yai then pursues its favorite decadence—the acclimation of material wealth and luxuries. Water yai tend to be easily distracted by beautiful treasures, and despite their evil natures are prone to acts of unexpected frivolity.