pf2e.fyi
From Pathfinder #161: Belly of the Black Whale, which isn't enabled.

Mother Venom

CREATURE 17
Perception +33; darkvision
Languages Aklo, Common, Sakvroth
Skills Arcana +29, Athletics +29, Crafting +31, Deception +33, Nature +30, Ooze Lore +31, Society +29, Stealth +31
Str +7, Dex +6, Con +9, Int +3, Wis +4, Cha +8

AC 38; Fort +32, Ref +29, Will +28
HP 400

Speed 40 feet, swim 20 feet
Melee Fangs +30 (agile), Damage 3d6+15 piercing plus Mother Venom Poison
Melee Ooze Tendril +28 (magical, reach 10), Damage 3d10+11 bludgeoning
Ranged Spit +31 (agile, range increment 30 feet), Damage plus Spit
Arcane Spontaneous Spells DC 39, attack +30; 9th (2 slots) Implosion, Power Word Kill; 8th (3 slots) Horrid Wilting, Power Word Stun; 7th (3 slots) Spell Turning, Warp Mind; 6th (2 slots) Flesh to Stone, Stoneskin; 5th (3 slots) Cloudkill, Dimension Door, Wall of Stone; 4th (3 slots) Confusion, Gaseous Form, Speak with Plants; 3rd (3 slots) Haste, Lightning Bolt, Stinking Cloud; 2nd (3 slots) Humanoid Form, Invisibility, Spider Climb; 1st (4 slots) Charm, Grease, Mage Armor, Magic Missile; Cantrips (9th) Acid Splash, Detect Magic, Message, Shield, Tanglefoot
Mother Venom Poison (poison)

DC 38

Maximum Duration 6 rounds
Stage 1 2d6 poison damage and Enfeebled 1 (1 round)
Stage 2 3d6 poison damage and Enfeebled 2 (1 round)
Stage 3 4d6 poison damage and Enfeebled 3 (1 round).
Ooze Tendril

Mother Venom can command her minions and the oozes that cover her dungeon to attack foes. As long as she's conscious, she can make melee ooze tendril Strikes that originate from any slime-covered terrain in her dungeon, including the dungeon's walls and doors, or from a space occupied by one of her children of venom.

Spit

A creature hit by Mother Venom's spit attack is Immobilized and stuck to the nearest surface (Escape).

Pathfinder #161: Belly of the Black WhaleOGL