Sunsoul Phoenix

The origin of those able to harness the divine flare of the solar phoenix are a mystery to the scholars. While some religious fanatics still claim it do be Aris' will, most agree that the answer can be found in the ancestry of the wielder.

Solar Flare

At 1st level, you gain the ability to start fires with a touch. As an action, you can magically ignite a flammable object you touch with your hand—an object such as a torch, a piece of tinder, or the hem of drapes.
Instead of igniting an object you can also gather the solar Flare in your hand and hold it there requiring your concentration. When doing so it sheds bright light in a 30ft radius. As a reaction you man release the flame and can cause it to ignite a flammable object within the radius of the bright light.

When you deal fire or radiant damage, this damage is increased by a number equal to your proficiency bonus.

 

Flaming radiance

When you deal fire or radiant damage, you may choose if you want this damage to be fire or radiant. When you do so, you ignore any resistances when the damage is applied.
You can use this feature a number of times equal to your proficiency bonus

Soaring Glory

Starting at 6th level, you can release the solar energy inside you.
As a Bonus Action you sprout fiery wings and your eyes glow with divine fire for 10 minutes.

While transformed you gain the following effects:
- You gain  hover speed equal to your walking speed.
- As reaction to taking damage originating from a creature you can cause this creature to take 1d10 fire or radiant damage.

You can use this feature a number of times equal to your proficiency bonus and can end the transformation at any time, no action required. It also ends early if you are unconscious.

Soulfire

You deepening connection with the divine allowed you to dive deem in the cosmic flame and touch the essence of the sibling deities of Sun, Moon and Stars.

You gain resistance to fire damage and cold and force damage are added to the options for your Flaming Radiance feature.

Additionally pick sun, moon or stars:

Sun: The scorching ray Spell gets added to the list of sorcerer spells known to you. You may cast once it without expending a spellslot and the level it is cast at doing so equals your proficiency bonus. additionally you gain a damage bonus equal to half your sorcerer level for each ray the spell creates.
Moon: The See Invisibility Spell gets added to the list of sorcerer spells known to you. You may cast once it without expending a spellslot and you may share the effect of the spell with a number of creatures up to half your sorcerer level within 30ft of you at the time f the cast
Stars: The Magic Missile Spell gets added to the list of sorcerer spells known to you. You may cast once it without expending a spellslot and the level it is cast at doing so equals your proficiency bonus. additionally you gain a damage bonus equal to half your sorcerer level for each missile the spell creates.

Suns Oath

Starting at 14th level, you feel the sense of dedication and echoes of an ancient oath empowering your soul. Even though you did not take this oath yourself it still empowers you.
Choose one of the following options:

Sunriders glory
You learn the Find Greater Steed spell and your Steed takes the form of a phoenix. It uses the statistics of a Griffon but is immune to fire or radiant damage, and resistant to the other and gains a bonus to its HP equal to twice your sorcerer level. It also ads your proficiency Bonus to its saving throws.
When you or your steed fail a saving throw, while being within 30ft of each other, you can use your reaction to increase the save by a number equal to your proficiency bonus, possibly turning it into a success. You can use this reaction a number of times equal to your proficiency bonus.

Sunpriests radiance
your fire and radiant spells soothe and restore. When you expend a spell slot to cast a spell that deals fire or radiant damage, you or a creature of your choice within 30ft of you
regains hit points equal to the twice the slot’s level + half your sorcerer level.
You learn the revivify and Deathward spells and they count as sorcerer spells for you.

Sun-Phoenix Avatar

At 18th level, you finally master the spark of fire that dances within you. You may use your Soaring Gory feature as often as you like.

In addition while your soaring glory Feature is active you gain immunity to fire or radiant damage and resistance to the other and your AC increases by 2.