ce large acid amphibious dragon 

Perception +22; darkvision, scent (imprecise) 60 feet

Languages Common, Draconic, Jotun

Skills Acrobatics +18, Arcana +19, Athletics +24, Deception +20, Intimidation +20, Stealth +20

Str +7 Dex +3 Con +5 Int +2 Wis +3 Cha +3

AC  31; Fort +23, Ref +18, Will +21; +1 status to all saves vs. magic

HP 215; Immunities acid, paralyzed, sleep

Frightful Presence (aura, emotion, fear, mental) 90 feet, DC 28

Tail Lash [R] Trigger A creature within reach of the dragon's tail takes an action to Strike or attempt a skill check; Effect The dragon Strikes with its tail at the triggering creature at a –2 penalty. If it hits, the creature takes a –2 circumstance penalty to the triggering roll.

Speed 50 feet, fly 120 feet, swim 50 feet

Melee [>] jaws +25 (acid, magical, reach 10 feet), Damage 2d12+13 piercing plus 2d6 acid

Melee [>] claw +25 (agile, magical), Damage 2d10+13 slashing

Melee [>] tail +23 (magical, reach 15 feet), Damage 2d12+11 bludgeoning

Melee [>] horns +23 (magical, reach 10 feet), Damage 1d10+11 piercing

Arcane Innate Spells DC 30; 2nd darkness (at will)

Breath Weapon [>>] (acid, arcane, evocation) The dragon breathes a spray of acid that deals 12d6 acid damage in an 80-foot line (DC 30 basic Reflex save). It can't use Breath Weapon again for 1d4 rounds.

Corrupt Water [>] (arcane, concentrate, necromancy) Frequency once per day; Effect The dragon permanently befouls 10 cubic feet of liquid within 90 feet. The liquid becomes undrinkable and unable to support water-breathing life. This destroys liquid magic or alchemical items if they're of a lower level than the dragon (a creature can attempt a DC 28 Will save to protect liquids in its possession). This doesn't affect the liquids in a creature's body.

Draconic Frenzy [>>] The dragon makes two claw Strikes and one horns Strike in any order.

Draconic Momentum The dragon recharges its Breath Weapon whenever it scores a critical hit with a Strike.

Bestiary, page 105.