pf2e.fyi
From Pathfinder Society Quest #5: The Dragon who Stole Evoking Day, which isn't enabled.

Ahrkinos (5-6)

CREATURE 6
UNIQUEMEDIUMAMPHIBIOUSDRAGONWATER
Perception +15; darkvision, scent (imprecise) 30 feet
Languages Common, Draconic, Osiriani
Skills Acrobatics +14, Athletics +15, Intimidation +12, Society +11, Stealth +14
Str +5, Dex +3, Con +5, Int +0, Wis +3, Cha -1
AC 24; Fort +17, Ref +14, Will +11
HP 120; Immunities paralyzed, unconscious; Resistances acid 10
Tail Lash
Trigger A creature within reach of Ahrkinos's tail uses an action to Strike or attempt a skill check.
Effect Ahrkinos attempts to Strike the triggering creature with his tail. If he hits, the creature takes a -2 circumstance penalty to the triggering roll.
Speed 20 feet, fly 40 feet, swim 30 feet
Melee Fangs +17, Damage 2d8+8 piercing
Melee Tail +17 (reach 10), Damage 2d6+8 bludgeoning
Caustic Mucus (acid, arcane)

Ahrkinos spits a ball of caustic mucus up to a range of 50 feet that explodes in a 10-foot burst. Creatures within the burst take 7d6 acid damage (DC 23 basic Reflex save). Those that fail this save also take 1d6 persistent acid damage and take a –5-foot status penalty to their Speed. This Speed reduction ends with the persistent acid damage.

Ahrkinos can't use Caustic Mucus again for 1d6 rounds.

Draconic Frenzy

Ahrkinos makes one fangs Strike and two tail Strikes in any order.

Old Bones

Ahrkinos's age has left him infirm and makes it difficult for him to fly. Ahrkinos becomes Fatigued if he uses more than one Fly action to fly in a single round. His Speed Surge is considered one Fly action for this purpose. In addition, he immediately begins to fall at the end of his turn if he is flying, but treats the fall as 40 feet shorter.

Speed Surge (move)

Ahrkinos moves up to twice his Speed. He can do this three times per day.

Pathfinder Society Quest #5: The Dragon who Stole Evoking DayOGL