Estrillon
Unique male great wyrm void dragon (CR 24)
LE Colossal dragon
Aura: alien presence (360ft)
Senses: dragon senses, see in darkness

==Defense==

AC 62, touch 11, flat-footed 58 (+8 armor, +5 deflection, +4 Dex, +43 natural, -8 size)
hp 728 (28d12+392)
Fort +30, Ref +22, Will +30
DR 20/adamantine (100 points; DR 20/magic once depleted); SR 35
Immune: cold, confusion, insanity effects, paralysis, sleep

==Offense==

Speed: 40ft, fly 250ft (good)
Melee: bite +46 (6d8+35/19-20 plus obliterate), 2 claws +46 (6d6+25/19-20), 2 wings +44 (3d8+15/19-20), tail slap +44 (6d6+35/19-20)
Special Attacks: breath weapon (24d8 cold; Ref DC 38 half), crush (6d8+30, Ref DC 38 half), tail sweep (3d8+25, Ref DC 38 half), obliterate (Fort DC 38), Suffocating Breath (Fort DC 38), Void Gaze (Will DC 37)
Spell-Like Abilities (CL 28th)
—Constant: Arcane Sight
—At Will: Blur, Dimension Door, Insanity, Ray of Enfeeblement, Ray of Exhaustion
—1/day: Gate, Nightmare

==Statistics==

Str 50, Dex 19, Con 38, Int 37, Wis 34, Cha 37
BAB +28, CMB +56, CMD 70 (74 vs trip)
Feats: Combat Casting, Flyby Attack, Hover, Improved Initiative, Improved Critical (natural), Iron Will, Lightning Reflexes, Multiattack, Quicken Spell, Hidden Presence, Weapon Focus (natural), Wingover, Manipulative Presence, Favored Enemy Spellcasting (cold outsiders)
Skills:
Languages:
SQ: bitter hatred, psychic knowledge

==Equipment==

—Head: major crown of blasting
—Eyes:
—Neck: +5 flaming burst impact amulet of mighty fists
—Shoulders:
—Chest:
—Body: belt of stoneskin
—Wrists: heavy fortification bracers of armor
—Hands:
—Ring 1: freedom of movement
—Ring 2: invisibility
—Feet:
—Armor:
—Shield:
—Other:

==Magic==

Psychic Spells Known (CL 20th)

—9th (6/day): Akashic Form, Divide Mind, Psychic Crush V, Time Stop, Wish

—8th (6/day): Earthquake, Etherealness, Greater Possession, Maze, Prediction of Failure

—7th (6/day): Antimagic Field, Banishment, Greater Teleport, Mind Blank, Telekinetic Sphere

—6th (6/day): Animate Objects, Blade Barrier, Disintegrate, Major Curse, Mass Bear’s Endurance

—5th (6/day): Dominate Person, Etheric Shards, Explode Head, Mind Thrust V, Permanency

—4th (6/day): Adjustable Polymorph, Agonize, Greater False Life, Telekinetic Charge, Terrible Remorse

—3rd and below: Irrelevant; Estrillon almost never uses these spells.

==Special Abilities==

Bitter Hatred (Ex): Against wendigo, Estrillon is considered to have the favored enemy bonuses of a 20th-level ranger.

Psychic Knowledge (Su): Estrillon casts spells as a 20th-level psychic (see Occult Adventures) instead of a 19th-level sorcerer. In addition, he gains the telepathy of a 17th-level psychic, and Arcane Sight as a constant spell-like ability. He does not gain any other psychic class features.

Tough as Nails (Ex): Unlike most NPCs, Estrillon possesses maximum hit points per Hit Die. This increases his CR by 3.

Wishes: Estrillon has made the following wishes: a +5 inherent bonus to all of his ability scores, additional spells known at each level (to a maximum of five spells per level), and the pounce universal monster ability.

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Two hundred years ago, the shimmering great wyrm known as Estrillon fell screaming from the sky after a bloody encounter with Ithaqua that left both beings scarred for months… though the most grievous wound was dealt to Estrillon’s pride. The immense alien dragon, already maddened from encounters in the stars, was further incensed by the notion that any creature smaller than himself was able to best him. That Ithaqua is a deity seems to be irrelevant to Estrillon; the enraged monster hunts wendigo more fervently than any other prey, including humanoids, with whom Estrillon has been known to ally.

Any action that harms wendigo advances his goals. While Estrillon is wholly evil, his immunity to madness nullifies that race’s most potent weapons, and he glories in the confusion they suffer as their powers do nothing.