Genasi Improved (Fire)

When a Genasi takes this feat:

• Become immune to fire damage.
• Become vulnerable to cold damage.
• Once per round, as a reaction, you can cast Aganazzer's Scorcher at first level when a creature attacks you with a ranged attack. When casting this spell, your DC = 8 + Intelligence Modifier + Proficiency Bonus. This can be used a number of times equal to your intelligence modifier per long rest.
• You gain Natural Fire as an action, allowing you to set your hair a light much like the produce flame cantrip. This remains until you dismiss it or until your hair gets wet and the fire is put out. Whilst your hair is wet, you cannot relight it and will have to wait until it's dry. This ability can be used once per short rest.