Path of Incandescent Fury

Deep in the wilderness, in the dead of night, a brutish hunter chants wildly around an open fire before thrusting her right arm into the exposed pyre. In a bustling city, a wild looking follower of Kossuth walks through a wall of flame to prove his devotion. At the peak of an active volcano, the lone survivor of a nomadic tribe plunges his hands into the flowing lava, screaming to the gods for righteous vengeance. Where some barbarians draw upon their inner bloodlust or a totem spirit to fuel their rage, those who walk the Path of Incandescent Fury call upon the primal power of fire, kindling a terrible flame within themselves. Some follow this path because of devotion to the divine, others for power, and a few for revenge. As they rage, their inner flame surges outward, illuminating their bodies, heating their weapons, and threatening to consume all around them.

Emberlink

Your innate connection to flame gives you a degree of control over it. You learn the Control flames cantrip.

Mantle of Flame

At 3rd level, when you adopt this path, your rage sets your body alight as you channel the destructive power of fire, bringing your inner flame forth.

While raging, you gain the following benefits:

Your body is wreathed in flame that is harmless to you and your equipment, causing your body to shed bright light in a 10-foot radius and dim light for an additional 20 feet. The color of the fire is chosen by you when you rage, and you may create vague images in the flame as a free action.

The flame surrounding you wards you from other sources of fire, and from the cold. You gain resistance to fire and cold damage.

Your weapons are imbued with a burning heat. You deal an additional 1d6 fire damage when you hit an enemy with a melee weapon attack. This damage improves to 1d8 when you reach 10th level.

Fiery Rebirth There's a myriad of reasons that a Barbarian might manifest these powers. One option is for the Barbarian to perform a short ritual of their own creation that creates a connection to the element of fire, similar to the examples in the intro blurb. At your discretion, the manifestation of these powers may physically mark you in some minor way: charred skin, the clinging smell of smoke and being uncomfortably hot to touch are just some examples.

Scorching Momentum

At 6th level, the fire within you ensures that no spell or magic will slow your advance. While raging, your speed can't be reduced by spells or other magical effects.

Inner Furnace

At 10th level, your link with fire deepens further as your blood runs hot and your heart beats with vigor, giving you a measure of protection against the elements and strengthening your inner flame.

You are immune to the negative effects of extreme cold or heat, and can breathe at high altitude normally.

Devouring Conflagration

At 14th level, your inner flame is at its strongest, straining against your body and spirit in a desire to consume everything in your path - perhaps even yourself.

Fire damage you deal now ignores resistance, except for your own. In addition, while raging, you may use your bonus action to intensify the flames surrounding your body, creating an aura of deadly heat in a 10-foot radius around you. At the end of each of your turns, you and any creature in the aura take 2d8 plus your Constituion modifier fire damage. This aura lasts until you end it with a bonus action, you fall unconcious, or your rage ends.