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From Pathfinder Adventure Path: Gatewalkers, which isn't enabled.

Ilakni

CREATURE 11
UNIQUEMEDIUMABERRATIONHUMANOID

Male fleshwarp

Perception +22; darkvision
Languages Common, Elven, Erutaki, Jotun
Skills Acrobatics +22, Athletics +23, Occultism +22
Str +6, Dex +5, Con +3, Int +7, Wis +5, Cha +0
AC 30; Fort +18, Ref +22, Will +22; +1 circumstance vs. diseases and poisons
HP 195; Immunities cold; Weaknesses fire 10; Resistances slashing 10
+1 Circumstance vs. Diseases and Poisons
Speed 25 feet, burrow 25 feet; burrow through blackfrost ice only
Melee Tentacle +22 (agile, magical, reach 10, unarmed), Damage 2d8+12 bludgeoning plus Grab
Melee Blackfrost Ice Shard +22 (occult), Damage 2d6+6 piercing plus 2d6 cold plus Blackfrost Dead Blackfrost
Blackfrost (cold, curse, disease, occult)

This affliction can't be reduced below stage 1, nor the damage from it healed, until successfully treated with Cleanse Affliction or a similar effect; the affliction can then be removed as a normal disease. A creature that dies from cold damage while cursed with blackfrost rises as a blackfrost dead after 24 hours. Blackfrost has a counteract rank of 10.

Saving Throw DC 27 Fortitude
Stage 1 4d6 cold (1 minute)
Stage 2 weakness to cold 5 and Drained 1 (1 day)
Stage 3 weakness to cold 10 and Drained 2 (1 day)
Blackfrost Breath

Ilakni breathes out a 60-foot cone of black wind. All creatures in the area take 10d6 cold damage (DC 30 basic Reflex); a creature that fails the save is also exposed to blackfrost. Ilakni can't use Blackfrost Breath again for 1d4 rounds.

Constrict

1d8+12 bludgeoning, DC 30 basic Fortitude

The monster deals the listed amount of damage to any number of creatures Grabbed or Restrained by it. Each of those creatures can attempt a basic Fortitude save with the listed DC.

Siphon Mind (mental, occult)
Requirements The target creature is Grabbed by Ilakni, is helpless, or is willing, and is adjacent to Ilakni
Effect Ilakni extrudes a seething forest of tendrils from his mouth to wrap around the target's head. These tendrils begin siphoning away the target's mind to make them an empty vessel, ready to be inhabited by Osoyo in the future. The target must attempt a DC 30 Will save.

Critical Success The target is unaffected and is temporarily immune to Siphon Mind for 24 hours.

Success The target takes 3d6 mental.

Failure The target takes 6d6 mental and becomes Stupefied 1, or increases its stupefied value by 1 to a maximum of stupefied 4. If the creature dies as a result of this mental damage, its body remains alive while its mind and soul move on. The body can remain alive without its soul and mind for many years, as long as it is cared for. If Osoyo escapes from its prison, a body in this state becomes animated by Osoyo's will, transforming into an entity with the same statistics as Ilakni but directly controlled by the Blackfrost Whale. If the body is restored to life before this event, this development can be avoided.

Critical Failure As critical failure, but 12d6 mental and Stupefied 2 (or increases its stupefied value by 2, to a maximum of 4).

Grab

Requirements The monster's last action was a successful Strike that lists Grab in its damage entry, or the monster has a creature Grabbed or Restrained
Effect If used after a Strike, the monster attempts to Grapple the creature using the body part it attacked with. This attempt neither applies nor counts toward the creature's multiple attack penalty.

The monster can instead use Grab and choose one creature it's grabbing or restraining with an appendage that has Grab to automatically extend that condition to the end of the monster's next turn.

Pathfinder Adventure Path: GatewalkersORC