Path of the Forge

A Path of the Forge Barbarian becomes a savage burning beast when raging their body becomes a weapon, hot like fire they can deal fire damage from contact with their skin and an aura of heat they exude. As they gain more experience with their rage they gain more control and further down the line learn skills such as Quench and Rage Re-ignition. However upon using all rage slots before a long rest you overheat gaining 2 stacks of exhaustion.

So shall you forge yourself into a great warrior or burn out as the heat becomes too much to bear.

 

Rage of the Inferno

Whenever you rage your fists become weapons dealing 1d4 +Str modifier, you gain resistance to fire and cold damage as your body exudes an aura of heat dealing fire damage to yourself and anyone who enters or ends their turn within 5ft of you. They must make a con save DC 8 + con modifier + proficiency taking full damage on a failure and half on a success. In addition any creature that touches you directly while you are raging takes fire damage (no save) once per unarmed\touch attack, at the start of the grapplers turn, or any other way contact is made.
However should you use up all your rage slots before taking a long rest you will gain 2 levels of exhaustion.

The damage for your aura is 1d4  and increases to 2d4 at level 11, 3d4 at level 15, and 4d4 at level 20 save DC= 8 + con modifier + proficiency bonus
The damage to contact with your skin is 1d6+ rage bonus increases to 1d8+ rage bonus at level 9, 1d10+ rage bonus at level 13, and 1d12+ rage bonus at level 17

Quench

As a reaction you can quench yourself ending your rage this process mimics quenching metal at a forge making your body harder than steel.

After using this reaction to end your rage you become immune to all non magical slashing, piercing, bludgeoning, and fire damage until the start of your next turn.

Rage Re-ignition

 Become resistant to fire damage even when not raging.

While already raging you may expend another charge of rage to push yourself even further and enter Rage Re-ignition. However upon ending Rage Re-ignition voluntarily or otherwise you will gain 1 level of exhaustion.

While using Rage Re-ignition both your aura and your contact deal double fire damage as you become wreathed in flame causing you to receive fire damage equal to your contact damage once per turn, in addition due to these flames you gain a cover of smoke giving creatures that rely on sight disadvantage on attack roles against you.

Forge Master

You become immune to fire damage even when not raging, in addition using up all your rage slots before a long rest no longer causes exhaustion.