Your base walking speed is 30 feet.

You can speak, read, and write Common and Celestial.

Your Charisma score increases by 2, and your Constitution score increases by 1.
Alternatively, you can increase an ability score of your choice by 2, and a different ability score of your choice by 1.

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. Your ties to the Elemental Plane of Fire make your darkvision unusual: everything you see in darkness is in a shade of red, as if seared by radiant energy.

You have resistance to fire damage.

You know the Light cantrip. Your spellcasting ability for this spell is your choice of Intelligence, Wisdom, or Charisma.

Starting at 3rd level, you can use your action to unleash the divine energy burning within your soul, causing your eyes to flare with light and two skeletal, flightless wings of fire to sprout from your back. The instant you transform, other creatures within 10 feet of you that can see you must each succeed on a Charisma saving throw (DC 8 + your proficiency bonus + your choice of your Intelligence, Wisdom, or Charisma modifier) or become frightened of you until the end of your next turn.

Your transformation lasts for 1 minute or until you end it as a bonus action. During it, once on each of your turns, you can deal extra fire damage to one target when you deal damage to it with an attack or a spell. The extra fire damage equals your level.

Once you use this trait, you can’t use it again until you finish a long rest.