The Monarch Worm

This massive beast possesses a mouth of rasping teeth and tentacles with biting mouths. In the center of its maw rests a glowing evil eye.

the Monarch Worm CR 23

XP 819,200
CE Colossal magical beast
Init +5; Senses darkvision 60 ft., low-light vision, tremorsense 180 ft.; Perception +27
Aura frightful presence (300 ft., DC 26)

DEFENSE

AC 39, touch 3, flat-footed 38 (+1 Dex, +36 natural, –8 size)
hp 472 (27d10+324); regeneration 30
Fort +29, Ref +18, Will +13
DR 15/epic; Immune ability damage, acid, bleed, cold, disease, energy drain, mind-affecting effects, paralysis, permanent wounds, petrification, poison, polymorph; SR 34

OFFENSE

Speed 40 ft., burrow 40 ft.
Melee 6 toothed tentacles +33 (2d10+13/19–20 plus grab)
Ranged ray +20 (disintegrate/19–20)
Space 30 ft.; Reach 30 ft.
Special Attacks hungry gaze, spines, swallow whole (2d10+13 plus 1d4 Str damage, AC 28, 47 hp)
Spell-Like Abilities (CL 27th; concentration +32)

At willdisintegrate (DC 21)
1/dayearthquake

STATISTICS

Str 36, Dex 13, Con 34, Int 5, Wis 14, Cha 21
Base Atk +27; CMB +48 (+52 grapple, +68 overrun); CMD 59 (can't be tripped)
Feats Ability Focus (hungry gaze), Awesome Blow, Bleeding Critical, Blind-Fight, Critical Focus, Great Fortitude, Improved Bull Rush, Improved Critical (ray), Improved Critical (toothed tentacle), Improved Initiative, Iron Will, Lightning Reflexes, Power Attack, Weapon Focus (toothed tentacle)
Skills Climb +20, Perception +27, Swim +17
Languages Aklo
SQ hibernation, unstoppable force

SPECIAL ABILITIES

Hungry Gaze (Su)

The monarch worms gaze attack deals 3d6 points of nonlethal damage plus fatigue at a distance of 120 feet. A successful DC 30 Fortitude save negates the fatigue. Creatures already fatigued become exhausted; creatures already exhausted become staggered. A creature that fails its save must succeed at a DC 30 Will save or gain an overwhelming compulsion to eat flesh of creatures of its type, including its own if no other is available. The save DCs are Charisma-based.

Spines (Ex)

Creatures striking it with natural weapons, unarmed strikes, melee weapons, or melee touch attacks take 2d6+12 points of damage.