Your innate magic comes from phoenix magic that was sparked in your blood or in your ancestors. Most often, sorcerers with this origin can't tell where they got it from.
1st-level Phoenix Fire feature
You learn additional spells when you reach certain levels in this class, as shown on the Phoenix Magic table. Each of these spells counts as a sorcerer spell for you, but it doesn’t count against the number of sorcerer spells you know.
In addition, consult the Phoenix Ancestor table and choose or randomly determine away your connection to your ancestor while you are casting any of your sorcerer spells. The color is associated with the Phoenix you choose.
You know the Produce Flames cantrip. When you reach 3rd level, you can cast the Burning Hands spell once with this trait and regain the ability to do so when you finish a long rest. When you reach 5th level, you can cast the Fireball spell once with this trait and regain the ability to do so when you finish a long rest. Charisma is your spellcasting ability for these spells.
Mantle of Flame
Starting at 1st level, you can unleash the phoenix fire that blazes within you.
As a bonus action, you magically wreathe yourself in swirling fire, as your eyes glow like hot coals. For 1 minute, you gain the following benefits:
You shed dim light in a 30-foot radius.
Any creature takes fire damage equal to your Charisma modifier if it hits you with a melee attack from within 5 feet of you or if it touches you.
Whenever you deal fire damage on your turn, you deal additional fire damage equal to your Charisma modifier.
You can use this feature equal to your Charisma Modifier.
You gain resistance to fire damage, and you have advantage on dexterity saving throws against fire damage.
Starting at 6th level, the fiery energy within you grows restless and vengeful. In the face of defeat, it surges outward to preserve you in a fiery roar.
If you are reduced to 0 hit points, you can use your reaction to draw on the spark of the phoenix. You are instead reduced to 1 hit point, and each creature within 10 feet of you takes fire damage equal to half your sorcerer level + your Charisma modifier.
Once you use this feature, you can’t use it again until you finish a long rest.
At 14th level, you gain the ability to sprout a pair of phoenix wings from your back, gaining a flying speed equal to your current speed. You can create these wings as a bonus action on your turn. They last until you dismiss them as a bonus action on your turn.
You can’t manifest your wings while wearing armor unless the armor is made to accommodate them, and clothing not made to accommodate your wings might be destroyed when you manifest them.
Body of the Phoenix
At 18th level, you finally master the spark of fire that dances within you. You can activate Mantle of flame at will. While under the effect of your Mantle of Flame feature, you gain additional benefits:
Its duration is extended to an hour.
Your speed with Phoenix Wings is doubled to 60 feet.
As an action, you can spend 6 sorcery points to expand your inner fire and turn into a phoenix resembling one of your Ancestors. For 1 minute, you have a flight speed of 80 feet, you are immune to fire and poison damage and each creature of your choice that starts its turn within a 10 feet radius of you takes 4d6 fire damage.
Your phoenix kin character has the following racial traits.
Ability Score Increase
Your Wisdom score increases by 2, and your Dexterity score increases by 1.
Phoenix Kin mature at the same rate as humans but live well into their second century.
Phoenix Kin tend toward chaos and good.
Phoenix Kin are tall, generally well over six feet, but are very light in spite of this. Your size is Medium.
Your base walking speed is 30 feet.
You have resistance to fire damage.
As an action, you may cry phoenix tears, on a dying creature within 5 feet. These tears lose their magical properties at the start of your next turn and you regain use of this trait after you finish a long rest.
A 1/Day Spare the Dying
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 can't discern color in darkness, only shades of gray.
Rise from the Ashes
If a phoenix kin dies within 100 miles of a phoenix, their soul can be ensnared by it. This soul will be reincarnated within the body of a random human baby developing within 100 miles of the Phoenix.