uncommon cn huge dragon elemental fire 

Perception +23; darkvision, scent (imprecise) 60 feet

Languages Common, Draconic, Ignan, Terran

Skills Acrobatics +21, Athletics +27, Deception +19, Intimidation +25, Nature +21, Stealth +21, Survival +23

Str +8 Dex +2 Con +5 Int +2 Wis +4 Cha +4

AC  34; Fort +26, Ref +21, Will +23; +1 status to all saves vs. magic

HP 270; Immunities fire, paralyzed, sleep; Weaknesses cold 15

Frightful Presence (aura, emotion, fear, mental) 90 feet, DC 30

Wing Deflection [R] Trigger The dragon is targeted with an attack; Effect The dragon raises a wing, gaining a +2 circumstance bonus to AC against the triggering attack. If the dragon is Flying, they descend 10 feet after the attack.

Speed 40 feet, fly 140 feet; magma swim 40 feet

Melee [>] jaws +27 (fire, magical, reach 15 feet), Damage 3d10+12 piercing plus 3d6 fire

Melee [>] claw +27 (agile, magical, reach 10 feet), Damage 3d10+12 slashing

Melee [>] tail +25 (magical, reach 20 feet), Damage 3d12+12 bludgeoning

Melee [>] horns +25 (magical, reach 15 feet), Damage 2d10+12 piercing

Primal Innate Spells DC 31, attack +23; 6th burning hands (at will), wall of fire (at will); Cantrips (6th) produce flame

Breath Weapon [>>] (evocation, fire, primal) The dragon breathes a blast of magma that deals 9d6 fire damage and 4d12 bludgeoning damage in a 40-foot cone (DC 33 basic Reflex save). They 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 their Breath Weapon whenever they score a critical hit with a Strike.

Magma Swim A magma dragon's swim Speed functions only when the dragon is Swimming through magma or molten lava.

Volcanic Purge [>] If the next action the dragon uses is Breath Weapon, the magma clings to those it damages. Each creature that fails its save against the Breath Weapon takes 4d6 persistent fire damage, and as long as it has this persistent fire damage, it also takes a –10-foot status penalty to its Speeds.

Bestiary 2, page 94.