Add these onto the Parent Race
Heatforged Talent
You gain proficiency in smith's tools and either longswords or greatswords.
Return Fire
When you take fire damage you may use your reaction to absorb some of its elemental essence and use it to incinerate an enemy. You gain resistance to fire damage until the end of your next turn. Also, your next melee weapon attack deals 1d6 additional fire damage on hit. You can use this trait a number of times equal to your Constitution modifier (minimum of 1) per long rest.
Counterflare
When you reach 3rd level, you can cast the hellish rebuke spell as a 1st-level spell once with this trait, and you regain the ability to cast it this way when you finish a short or long rest. Constitution is your spellcasting ability for this spell.