uncommon ne medium aberration amphibious 

Perception +24; greater darkvision, host scent 30 feet

Languages Aklo

Skills Acrobatics +22, Athletics +24, Nature +22, Survival +22

Str +7 Dex +5 Con +7 Int +3 Wis +7 Cha +5

Host Scent An isqulug can precisely sense any creature infected with isqulugia within 30 feet, and knows the current stage of the disease.

AC  31; all-around vision; Fort +24, Ref +20, Will +18

HP 230, regeneration 10 (deactivated by cold); Immunities swarm mind; Weaknesses cold 10

Speed 25 feet, swim 25 feet; swamp stride

Melee [>] tentacle +22 (agile, reach 10 feet), Damage 2d12+11 bludgeoning plus isqulugia

Primal Innate Spells DC 30, attack +22; 6th tangling creepers; 5th control water, entangle (at will), hallucinatory terrain, obscuring mist (at will); 4th fly; Cantrips (5th) dancing lights; Constant (1st) pass without trace

Expel Infestation [>>] The isqulug expels larvae from the hivemind in its head in a 30-foot cone. Creatures in this area take 6d10 piercing damage as the swarm feeds on their flesh (DC 30 basic Reflex save). Any creature that takes damage is exposed to isqulugia. The isqulug becomes stupefied 1 for 1d4 rounds, during which it can't Expel Infestation.

Isqulugia (disease, incapacitation, primal, transmutation, virulent) Isqulugia's sickened, slowed, and paralyzed conditions can't be removed until this affliction is removed Saving Throw DC 30 Fortitude; Stage 1 sickened 1 (1 hour); Stage 2 fatigued and sickened 2 (1 day); Stage 3 fatigued and slowed 1 (1 day); Stage 4 paralyzed (1 day); Stage 5 the creature dies, and its body violently transforms into a new isqulug.

Malleability The isqulug can Squeeze through tight spaces as if it were a Small creature. While Squeezing, it can move at its full Speed. The isqulug can even Squeeze through spaces that typically fit only a Tiny creature, but does so at the standard speed for Squeezing.

Swamp Stride An isqulug ignores difficult terrain that's caused by typical features of swamps.

Bestiary 2, page 149.