unique le gargantuan dragon fire 

Male great wyrm gold dragon (Bestiary 124)

Perception +40; darkvision, scent (imprecise) 120 feet

Languages Common, Draconic, Dwarven, Elven, Gnomish, Infernal, Sylvan, Utopian

Skills Acrobatics +32, Arcana +38, Athletics +36, Diplomacy +43, Intimidation +43, Medicine +36, Nature +32, Occultism +38, Society +43

Str +11 Dex +5 Con +9 Int +8 Wis +7 Cha +7

AC  50; Fort +37, Ref +34, Will +42; +2 status to all saves vs. magic

HP 575; Immunities fire, paralyzed, sleep; Weaknesses cold 25

Frightful Presence (aura, emotion, fear, mental) 90 feet, DC 43

Extra Reaction Dagra gains 2 reactions at the start of his turn each round.

Attack of Opportunity [R] Jaws only.

Contingency [R] Trigger Dagra fails a saving throw against a spell. Effect Dispel magic (7th level) attempts to counteract the triggering spell.

Golden Luck [R] Trigger The gold dragon fails a saving throw. Effect The dragon improves its result by one degree of success, turning a failure into a success or a critical failure into a normal failure. The dragon can't use this ability again for 1d4 rounds.

Speed 60 feet, fly 200 feet, swim 60 feet

Melee [>] jaws +42 (fire, magical, reach 20 feet), Damage 6d12+11 piercing plus 4d6 fire

Melee [>] claw +42 (agile, magical, reach 15 feet), Damage 6d10+11 slashing

Melee [>] tail +40 (magical, reach 25 feet), Damage 6d10+11 slashing

Melee [>] horns +40 (agile, magical, reach 20 feet), Damage 5d12+11 piercing

Arcane Innate Spells DC 45, attack +42; 10th contingency (this spell has been cast already), wish; 9th disjunction, meteor swarm, telepathic demand; 8th dream council, maze, power word stun; 7th dimensional lock, dispel magic (this spell has been cast already), plane shift; 6th dominate, true seeing, wall of force; 5th chromatic wall, mind probe, sending; 4th creation, dimension door, suggestion; 3rd dream message, locate, slow; 2nd comprehend language, invisibility, water breathing; 1st charm, magic missile, unseen servant; Cantrips (10th) daze, detect magic, forbidding word, prestidigitation, read aura

Arcane Rituals DC 45; animate object, Anima Invocation, geas, imprisonment, inveigle, legend lore, resurrect

Breath Weapon [>>] The gold dragon breathes in one of two ways. The dragon can't use Breath Weapon again for 1d4 rounds.

• Flame (arcane, evocation, fire) The dragon breathes a blast of flame in a 80-foot cone that deals 24d6 fire damage (DC 46 basic Reflex save).
• Weakening Gas (arcane, necromancy) The dragon breathes a blast of weakening gas. Each creature within a 80-foot cone must succeed at a DC 46 Fortitude save or become enfeebled 4 for 1 minute (or enfeebled 5 on a critical failure).

Change Shape [>] (arcane, concentrate, polymorph, transmutation) Dagra assumes a Medium humanoid form, posing as the human wizard Lamond Miaton.

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

Draconic Momentum When the gold dragon scores a critical hit with a Strike, it recharges Breath Weapon.

Explosive Breath When Dagra uses Breath Weapon, he can expel an explosive orb of flame instead of a cone. When he does, he fires the orb at the corner of a square within 60 feet. The orb immediately detonates and deals 24d6 fire damage (DC 48 basic Reflex save) to all creatures within a 30-foot burst. Creatures that critically fail their save catch on fire and take 4d6 persistent fire damage.

Age of Ashes #6: Broken Promises, page 90.