Young Red Dragon

Searing Heat. A creature that starts its turn touching the dragon, or touches it or hits it with a melee attack for the first time on a turn, takes 3 (1d6) fire damage.

Volcanic Tyrant. The dragon is immune to the effects of poisonous gases caused by volcanic environments. It also ignores difficult terrain caused by lava.

Innate Spellcasting. The dragons spellcasting ability is Charisma (save DC 16). It can innately cast the following spells, requiring no material components. 3/day each:command, hold person

Multiattack. The dragon attacks once with its bite and twice with its claws.

Bite. Melee Weapon Attack: +10 to hit, reach 10 ft., one target. Hit: 22 (3d10 + 6) piercing damage plus 4 (1d8) fire damage.

Claw. Melee Weapon Attack: +10 to hit, reach 5 ft., one target. Hit: 15 (2d8 + 6) slashing damage.

Fire Breath (Recharge 5-6). The dragon exhales a blast of fire that fills a 30-foot cone. Each creature in that area makes a DC 17 Dexterity saving throw taking 52 (15d6) fire damage on a failed save or half damage on a success. A creature that fails the saving throw also takes 5 (1d10) ongoing fire damage. While affected by this ongoing damage it is frightened of the dragon. A creature can use an action to end the ongoing damage.