str14+2
dex11+0
con13+1
int2-4
wis9-1
cha7-2
Armor Class: 15 (natural armor)
Hit Points: 65 (10d10 + 10)
Speed: 30 ft.
Damage Resistances: Acid, Fire
Senses: darkvision 60 ft., passive Perception 8
Challenge Rating: 5 (1,800 XP)
Features
Mirror Scales. If the infurnace is subjected to an effect that allows it to make a dexterity saving throw to take only half damage, the infurnace instead takes no damage if it succeeds on the saving throw, and if the source of the effect was a creature, that creature must make the same Dexterity saving throw, suffering all the same effects.
Searing Blood. A creature that hits the infurnace with a melee weapon attack while within 5 feet of it takes 10 (3d6) acid damage.
Actions
Multiattack. The infurnace makes two attacks: one with its bite and one with its claws.
Bite. Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit: 13 (2d10+2) Piercing damage.
Claws. Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit: 9 (2d6+2) Slashing damage, and an additional 7 (2d6) Acid damage.
Fire Breath (Recharge 6). The infurnace exhales fire in a 30-foot cone. Each creature in that area must make a DC 13 Dexterity saving throw, taking 28 (8d6) Fire damage on a failed save, or half as much damage on a successful one.