Path of the Fame Warden

The flame in the hearth, the embers of the grass fire, and the burning aftermath of a lightning strike all call to you, and the fiery elemental spirits tied to these lands by ancient pacts have chosen you. You channel your barbaric fury to infuse your body with a fiery primal radiance. Known as flamecunning, this power enhances your bouts of rage and wreathes your attacks in purifying flame. As you grow in power, the flamecunning fills and consumes you, keeping your flesh free of lycanthropy and other diseases, while inspiring your allies to greater prodigies of valor. Eventually, this flame burns so bright that your mere presence becomes a source of burning agony for your enemies. 

-From Ravenloft Players Compendium page: 28

Flamecunning Strike

At 3rd level, as a bonus action, you can choose one creature you can see within 30 feet of you. Until the end of this turn, your melee weapon attacks against that creature ignore its damage resistances, and if you are raging, the next time you hit it on this turn, it takes an additional 2d6 fire damage. Once you use this feature, you cannot do so again until after the end of your next turn. 

Living Crucible

At 6th level, the primal fire in your soul burns away the taint of evil. You gain resistance to fire damage and have advantage on saving throws against magical diseases While raging, you automatically succeed on saving throws against contracting any disease, mundane or magical.

Hunter's Cry

At 10th level, the purifying flames within you can inflame the hearts of your allies. As an action, you unleash a howling battle cry. Until the end of your next turn, every ally within 15 feet of you gains advantage on attack rolls and saving throws, and hostile creatures within 15 feet of you cannot take reactions. Once you use this feature, you can’t use it again until you finish a long rest.

Aura of Fire

Beginning at 14th level, the potent force of your rage inspires your allies and instills fear in your foes. When raging, you emanate a fiery aura within a 15-foot radius. The area within your aura is difficult terrain for your enemies and any enemy that ends its turn within your aura takes fire or radiant damage (your choice) equal to your Rage Damage bonus.