This race is needed obviously, and the abilities seem pretty obvious to me. The resistance to fire, hellish rebuke, and darkness all can translate very nicely to Minecraft. Hellish rebuke can be an ability triggered by the primary key shortly after taking damage, and will ignite the attacker while doing some additional damage. Darkness can be the secondary key and inflicts blindness to every entity in a radius. Lastly, additional fire spell power for the Wizards mod would be a nice touch for RFK.

Still need to give them the hellish rebuke and darkness spells, but the rest of this has been completed. Created a draft for the infernal legacy ability.