Ability Score Increase: Your Charisma score increases by 2, and your Constitution score increases by 1.

Darkvision: Thanks to your infernal heritage, you have superior vision in dark and dim conditions. You can see in dim light within 60 feet of you as if it were bright light, and in darkness as if it were dim light. You can't discern color in darkness, only shades of gray.

Fiery Resilience: You have resistance to fire damage.

Draconic Heritage: You can use your action to exhale destructive energy. Your draconic heritage determines the size, shape, and damage type of the exhalation. When you use your breath weapon, each creature in the area of the exhalation must make a saving throw, the type of which is determined by your draconic ancestry. 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. After you use your breath weapon, you can't use it again until you complete a short or long rest.

Infernal Legacy: You know the Thaumaturgy cantrip. When you reach 3rd level, you can cast the Hellish Rebuke spell once with this trait as a 2nd-level spell, and you regain the ability to do so when you finish a long rest. When you reach 5th level, you can cast the Darkness spell once with this trait, and you regain the ability to do so when you finish a long rest. Charisma is your spellcasting ability for these spells.