Ignite
At 1st level, as an action, you can magically ignite a flammable object you touch with your hand.
Mantle of Flame
Starting at 1st level, as a bonus action, you magically wreathe yourself in swirling fire. For 1 minute, you gain the following benefits:
You shed bright light in a 30-foot radius and dim light for an additional 30 feet.
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 roll fire damage on your turn, the roll gains a bonus equal to your Charisma modifier.
Once you use this feature, you can't use it again until you finish a long rest.
Phoenix Spark
Starting at 6th level, if you are reduced to 0 hit points, you can use your reaction instead be 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.
If you use this feature while under the effects of your Mantle of Flame, this feature instead deals fire damage equal to your sorcerer level + double your Charisma modifier, and your Mantle of Flame immediately ends. Once you use this feature, you can't use it again until you finish a long rest.
Nourishing Fire
Starting at 14th level, when you expend a spell slot to cast a spell that includes a fire damage roll, you regain hit points equal to the slot's level + your Charisma modifier.
Form of the Phoenix
At 18th level, while under the effect of your Mantle of Flame feature, you gain additional benefits:
You have a flying speed of 40 feet and can hover.
You have resistance to all damage.
If you use your Phoenix Spark, that feature deals an extra 20 fire damage to each creature.