Heated Aura. At the start of each of the dragon's turns, or whenever its hit by a melee attack from a hostile creature, it deals 2 (1d4) fire damage to each creature within 10 ft of it. 

Multiattack. The dragon makes three attacks: one with its bite and two with its claws.

Bite. Melee Weapon Attack: +6 to hit, reach 10 ft., one target. Hit: 14 (2d10 + 3) piercing damage plus 4 (1d8) fire damage.

Claw. Melee Weapon Attack: +6 to hit, reach 5 ft., one target. Hit: 10 (2d6 + 3) slashing damage.

Fireball. Ranged Weapon Attack: +3 to hit, range 15/40 ft., one target. Hit: 16 (3d10) fire damage.

Fire Breath (Recharge 6). The dragon exhales an burst of flame in a 35-foot cone or 40-foot, 5-foot wide line. Each creature in that area must make a DC 15 Constitution saving throw, taking 42 (12d6) fire damage on a failed save, or half as much damage on a successful one.

Death Gaze (1/Day). The dragon makes a Fireball attack on a target within range, which has advantage if the target is vulnerable to fire or bludgeoning damage. On a hit, the target takes no damage but must succeed on a DC 14 Constitution saving throw or, if it has 70 hit points or less, drop to 0 hit points immediately.