ce huge aberration aquatic 

Perception +30; darkvision, see invisibility

Languages Aklo

Skills Arcana +33, Athletics +33, Deception +31, Intimidation +29, Sea Lore +33

Str +8 Dex +4 Con +6 Int +8 Wis +5 Cha +6

AC  41; Fort +31, Ref +25, Will +32

HP 335; Weaknesses fire 15; Resistances cold 10, electricity 10

Magic-Warping Aura (arcane, aura, transmutation) 30 feet. A vaspercham's shell distorts nearby magic. Any creature in the aura who Casts a Spell must attempt a DC 37 Will save. Critical Success The spell is unaffected and the caster is temporarily immune to the magic-warping aura for 1 minute.Success The spell is unaffected, but if the spell allows a saving throw, the vaspercham gains a +1 circumstance bonus to save against it.Failure If the spell has a target and there are one or more viable targets within its range, the spell's target changes, determined randomly by the GM. If there is no other possible target within range or the spell has no target, the spell is disrupted.Critical Failure The caster instead Casts another Spell, choosing randomly from their spell repertoire, prepared spells, or available focus spells (as appropriate) and selecting any targets at random.

Speed 20 feet, swim 50 feet

Melee [>] tentacle +33 (agile, magical, reach 20 feet), Damage 3d10+16 bludgeoning plus hallucinatory brine

Ranged [>] water blast +33 (brutal, magical, range increment 100 feet, water), Damage 2d8+16 bludgeoning plus hallucinatory brine

Arcane Innate Spells DC 41; 9th cone of cold, spell immunity; 8th lightning bolt; 7th regenerate; 6th spellwrack (×3); 5th control water (at will); Constant (7th) see invisibility

Hallucinatory Brine (arcane, illusion, mental) A creature hit by the vaspercham's Strikes or Mindwarping Tide must attempt a DC 38 Fortitude save. On a failure, the creature is overwhelmed with phantasmal visions, becoming confused for 1 round (1 minute on a critical failure).

Mindwarping Tide [>] (concentrate) The vaspercham releases an effusion of noxious water from its shell. Creatures within a 15-foot emanation must save against the vaspercham's hallucinatory brine.

Whipping Tentacles [>>] The vaspercham makes four tentacle Strikes, each against a different target. These attacks count toward the vaspercham's multiple attack penalty, but the multiple attack penalty doesn't increase until after the vaspercham makes all of their attacks.

Bestiary 2, page 279.