Burning Artist

You have proficiency and Advantage in the Performance skill to create art out of fire.

Fire Aura

At the end of each of your turns, any creature of your choice within 5ft of you takes 1d6 fire damage. This damage increases to 2d6 at level 5.

Constrict

You can wrap your serpentine tail around a target of your choice within 10 feet of you. The target must make a DC 8 + Strength modifier + proficiency bonus on one Large or smaller creature you can see within 10 feet. On a failure are grappled and take 1d6 + Str bludgeoning damage plus 1d6 fire damage. The target has the Grappled condition (escape DC same as saving throw), and it has the Restrained condition until the grapple ends.

Immolate Weapon 

You have the ability to immolate a weapon you are proficient with making it do an extra (1d6) Fire damage when you attack with it.

Pure Heat

You have immunity to Fire damage and vulnerability to Cold damage.