Way of the Burning Soul

Your soul burns hotter than your body can fully contain though with this martial art you have learned to harness your burning soul in order to fight any who oppose you burning them to a crisp, though the unstable nature of your fighting methods do tend to leave you with a few burns yourself. 

Burning Rage

Beginning at 3rd level when choosing this tradition, Once per long rest, you enter a state where once per turn you can add half the damage you have taken to your HP to an attack as magical fire damage. For example, if you have 30 maximum hit points but you currently only have 10, you can add 10 damage.

Every turn in this state you take 1d4 times the number of turns you have been in the state.

The state ends if you are restored to full HP or are not attacked for two turns or if you go unconscious or if you end it with an action.

Overburn

At 6th level when you go below 0 HP and you are in the Burning Rage state you do not go unconscious but remain fully active and gain immunity to fire damage including your own. However, gain immunity to fire damage including your own but you still must roll death-saving throws. If you end your Burning rage you immediately go unconscious if you still have zero health.

Rising Rage

Starting at 11th level when burning rage is activated the character also gains a pair of flaming bird wings with a flying speed of 60ft.

One with the flames

When you use your burning rage feature the fire damage you inflict upon yourself is now felt by those around you. When you roll for your self damage at the start of your turn all creatures within 5ft of you take that damage as well.