The frame of this immense monstrosity is humanoid, but its ichthyic visage is that of a deep-sea predator.

XP 38,400
CE Gargantuan monstrous humanoid (aquatic, deep one)
Init +5; Senses darkvision 60 ft., low-light vision; Perception +24
Aura cloak of chaos (DC 22), staggering presence (180 ft., DC 21)

DEFENSE

AC 29, touch 11, flat-footed 24 (+4 deflection, +1 Dex, +18 natural, –4 size)
hp 202 (15d8+135); regeneration 10 (fire)
Fort +18, Ref +16, Will +19
Defensive Abilities mind reflection; DR 10/magic and piercing;
Immune cold, disease; Resist acid 10, electricity 10; SR 25

OFFENSE

Speed 30 ft., swim 60 ft.
Melee bite +24 (2d8+13/19–20), 2 claws +24 (2d6+13/19–20)
Space 20 ft.; Reach 20 ft.
Special Attacks devastating strike, staggering presence
Spell-Like Abilities (CL 14th; concentration +18)

Constant—cloak of chaos (DC 22), freedom of movement
At will—dream, hold monster (DC 19)
3/day—black tentacles, demand (DC 22), insanity (DC 21), nightmare (DC 19)
1/day—dominate monster (DC 23), symbol of insanity (DC 22)
1/week—binding (DC 22)

STATISTICS

Str 36, Dex 12, Con 28, Int 19, Wis 23, Cha 19
Base Atk +15; CMB +32 (+34 bull rush); CMD 47 (49 vs. bull rush)
Feats Awesome Blow, Improved Bull Rush, Improved Critical (bite), Improved Critical (claw), Improved Initiative, Lightning Reflexes, Power Attack, Vital Strike
Skills Intimidate +22, Knowledge (arcana, religion) +19, Perception +24, Sense Motive +21, Stealth +7, Swim +39, Use Magic Device +19
Languages Aklo, Common
SQ amphibious, deep dweller, deific, immortal, item use

SPECIAL ABILITIES

Deep Dweller (Ex)

Deep ones are immune to damage from water pressure; their bodies are capable of instantly adjusting to different water depths or even the surface with ease.

Devastating Strike (Ex)

An elder deep one ignores the first 10 points of hardness when it damages an object with its claws. A creature struck with a critical hit from an elder deep one's claw must succeed at a DC 30 Fortitude save or be stunned for 1 round. The save DC is Strength-based.

Deific

An elder deep one can grant divine spells to its worshipers. Granting spells does not require any specific action on the elder deep one's behalf. Elder deep ones grant access to the domains of Chaos, Evil, Madness, and Water.

Their symbols vary, but their favored weapon is the claw.

Immortal (Ex)

A deep one does not age. Barring death from violence, disease, or misadventure, a deep one can live forever. Deep ones are immune to effects that cause magical aging.

Item Use (Su)

A deep one can activate spell-trigger items like staves and wands as if it were a spellcaster of the appropriate class.

Mind Reflection (Ex)

Any mind-affecting effect that fails to affect an elder deep one is reflected back on the source, affecting the original caster as if by spell turning, treating the elder deep one as the controller and source of the spell.

Staggering Presence (Ex)

This ability functions as frightful presence, except that a creature that fails its save is also staggered as long as it remains in the area of effect, and for an additional 1d6 rounds after leaving that area. This is a mind-affecting fear effect.