Yove been burned and have burned others but have finally gotten control of your flame and have found solice in it it still hurts to use it but you haven't truly felt pain in a while at least physical pain anyways at one point it was another's but they have passed on the embers to you so that you might live through the days to come. 

Passing the embers

After one failed death save you can fail the other two to give half your base stats to an Allie within 20 feet but they take half your maximum health as fire damage

Fueling the flames

Instead of spell slots for each level of spell you want to cast it takes 1 hit die ex want to cast fireball at 9th level 9 levels of what ever your hit due are 

The cost of power

You gain immunity to fire damage but all healing spells that target you only heal half the total amount 

Defiance

As a reaction You can make an attack roll against you be rerolled prof bonus times per long rest

Unyielding will

Gain resistance to being charmed frightened poision slashing piercing and bludgeoning  damage and if you have any points of exhaustion ignore one point you can this once every short rest or sacrifice health to activate again

Rigorous training

Light armor gives a plus two to dex medium armor gives a plus 2 to con heavy armor gives a plus two to strength 

Ashen blade

Summon a weapon of hyper condensed ash this weapons form will be what ever weapon you are most proficient with and deals that weapons damage as fire damage to the target. it takes 2d6 of health to summon 

Deaths ashen embrace

When you grapple an enemy you meet their gaze and show them what is to come they must make a con check with a DC of 12 plus your prof bonus other wise they are prome for the next two turns or until they make the save

Unyeilding Defiance

Gain immunity to being frightened and charmed

The final roar

As a final action you can engulf your enemies upto 25 feet away in a fire ball around you that deals 5d10

The defiant's roar

While in combat you roar this can scare any enemies within 30 feet dc is 17 of you and heals you 5d6 at the start of the next three rounds 

Rise from the ashes

After being knocked down if you have two failed death saves you can rise again as a burnt out shell of yourself  with half the stats and health for the rest of combat in this state you can either use your final action or stand and fight and all class features that use health lose their health cost but can only be used twice