Fire warrior

You have an affinity for fire and have learned to fight with it

Embers emerge

Your blood boils, any weapon you wield begins to glow. while you are wielding a weapon it deals an additional 1d6 fire damage, this damage increases by 1d6 at lvl7, 10, 15, and 18.

control and ignite

you can create, destroy, or manipulate non magic flames within 5ft x con mod + proficiency bonus. as an action you can ignite one object you touch

Vengeful flames

as a reaction to being hit by an attack you may cause intense flames to engulf the attacker, dealing fire damage equal to 5x your proficiency bonus or half as much on a successful dex save, dc = 8+prof bonus+con mod, if the target has damaged you in a previous round of this combat they take additional fire damage equal to your fighter lvl. you may use this feature a number of times = to con mod + proficiency bonus

firewalker of phoenix flames

your affinity for fire has grown to the point that it protects you, you now have resistance to fire damage

when you use your second wind feature you regain additional hp equal to your fighter lvl as you are wreathed in healing flames

like moths to a flame

as an action you wreath yourself in flames for 1 minute. while active you gain temp hp equal to your lvl x2, in addition enemies have disadvantage on all attacks not directed at you, if someone hits you they take fire damage equal to 2x your lvl as flames engulf them. you may use this feature a number of times equal to your proficiency bonus +1

Raging inferno

You have reached the pinnacle of affinity to fire, you now have immunity to fire damage. when you use your action surge , you deal additional fire damage equal to your con mod on each hit, and everyone within 15ft of you must make a dex save dc= 8+con mod+prof bonus. on a failed save they take 10x prof bonus fire damage or half as much on a success