rare ce large animal fire 

Perception +29; darkvision, tremorsense (imprecise) 60 feet

Skills Athletics +34, Stealth +31, Survival +29

Str +9 Dex +6 Con +8 Int -5 Wis +4 Cha +5

Frightful Presence (aura, emotion, fear, mental) 60 feet, DC 36

AC  40; Fort +31, Ref +29, Will +23

HP 340; Immunities chaotic, evil, fire; Weaknesses cold 20

Explosion (fire) When a Stothukeind dies, it explodes, dealing 15d8 fire damage to creatures in a 30-foot emanation (DC 39 basic Reflex save).

Light Blindness

Internal Furnace [R] (fire) Trigger A creature adjacent to the Stothukeind touches it or hits it with a physical attack; Effect The triggering creature takes 5d8 persistent fire damage (DC 37 Reflex save to negate).

Speed 40 feet, burrow 40 feet, climb 40 feet

Melee [>] jaws +30 (reach 10 feet), Damage 4d8+9 piercing plus 2d8 persistent fire and Grab

Melee [>] claw +30 (agile, reach 10 feet), Damage 4d6+9 slashing plus 2d8 persistent fire

Breath Weapon [>>] (arcane, evocation, fire) The Stothukeind sprays a 60-foot cone of magma that deals 10d10 fire damage and 2d6 persistent fire damage to all creatures in the area (DC 39 basic Reflex save). The Stothukeind can't use its Breath Weapon again for 1d4 rounds.

Heat Surge When the Stothukeind critically hits, its body surges with heat, increasing the damage of its Internal Furnace to 10d8 until the start of its next turn.

Age of Ashes #5: Against the Scarlet Triad, page 91.