race features:
Breath Weapon. Fire 15' cone (Dex. save). When you use your breath weapon, each creature in the area of the exhalation must make a saving throw. The DC for this saving throw equals 8 + your Constitution modifier + your Proficiency Bonus. A creature takes 2d6 damage on a failed save, and half as much damage on a successful one. The damage increases to 3d6 at 6th level, 4d6 at 11th level, and 5d6 at 16th level. You can use your breath weapon once. After you use your breath weapon, you can’t use it again until you complete a short or Long Rest. You get one additional use at 6th, 11th, and 16th level.
Damage Resistance. You have resistance to fire damage.
Mountain Masters. You have a climb speed of 30 feet. Accustomed to deep Caves, you have superior vision in dark and dim Conditions. Your darkvision has a range of 120 feet. You can see through fire and black smoke as they were clean air. You can breathe normally in confined, burning spaces.
Indomitable. You gain proficiency in the Intimidation skill. You have advantage on saving throws against being charmed or frightened.