You can breathe air and water.    

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 gain immunity to fire damage.  

Your Dexterity score increases by 1, your Constitution score increases by 1, and your Charisma score increases by 1.  

When you cast a spell that deals fire damage, roll a d6, and you gain a bonus to one damage roll of the spell equal to the number rolled.  You also gain a special ability, as described below:  

Empowered Fire:  You can enhance your fire magic with your natural connection to Elemental Fire.  When you cast a spell of 1st-level or higher that deals fire damage, you can choose a number of creatures equal to 1 + your Constitution modifier (minimum of 1).  Those creatures have disadvantage on the first saving throw made to resist the spell's effects.  

Additionally, any creatures affected by this ability take an extra 5 (1d10) fire damage when taking damage from the spell.  The extra damage increases to 11 (2d10) at 6th-level, 17 (3d10) at 13th-level, and 22 (4d10) at 17th-level.  

You can use this ability a number of times equal to 1 + your proficiency bonus, and you regain all expended uses when you finish a long rest.  At 14th-level, you regain all expended uses when you finish a short or long rest.  

You have a swimming speed of 30 feet.  You can swim through lava as if you were swimming through water.