le huge amphibious dragon 

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

Languages Common, Draconic, Elven, Sylvan

Skills Acrobatics +19, Arcana +22, Athletics +24, Deception +19, Diplomacy +23, Intimidation +23, Nature +20, Occultism +24, Society +22, Stealth +21

Str +6 Dex +3 Con +3 Int +4 Wis +4 Cha +5

AC  34; Fort +20, Ref +22, Will +23; +1 status to all saves vs. magic

HP 215; Immunities poison, paralyzed, sleep

Frightful Presence (aura, emotion, fear, mental) 90 feet, DC 31

Twisting Tail [R] Trigger A creature within reach of the dragon's tail uses a move action or leaves a square during a move action it's using. Effect The dragon makes a tail Strike at the creature with a –2 penalty. If it hits, the dragon disrupts the creature's action.

Speed 40 feet, fly 160 feet, swim 40 feet; trackless step, woodland stride

Melee [>] jaws +26 (magical, poison, reach 15 feet), Damage 3d10+12 piercing plus 3d4 poison

Melee [>] claw +26 (agile, magical, reach 10 feet), Damage 3d8+12 slashing

Melee [>] tail +24 (magical, reach 20 feet), Damage 3d8+10 bludgeoning

Melee [>] horn +24 (magical, reach 15 feet), Damage 2d8+10 piercing

Arcane Innate Spells DC 32; 4th suggestion; 2nd entangle (×2)

Breath Weapon [>>] (arcane, evocation, poison) The dragon breathes a toxic cloud that deals 13d6 poison damage in a 50-foot cone (DC 31 basic Fortitude save). It can't use Breath Weapon again for 1d4 rounds.

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

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

Trackless Step The green dragon always gains the benefits of Cover Tracks in natural surroundings, even while moving at full speed.

Woodland Stride The green dragon ignores difficult terrain and greater difficult terrain from non-magical foliage.

Bestiary, page 110.