Path of The Hell Scourged

When these dominating barbarians enter the room, you can feel the heat of the hellfire emanating from them. Forged or trained in the pits of the Hells, they are the toughest of the tough. They've learned to harness Hell's fire to destroy their enemies and are used to being burned themselves. These resilient warriors are not ones to be messed with.

Forged in Hellfire

Starting when you choose this path at 3rd level, you gain resistance to fire damage while raging. Whenever you make an unarmed strike or an attack with a weapon that you are proficient in, you can choose to have that attack deal fire damage instead.

Indestructable

Also at 3rd level, you gain the ability to take advantage of your natural resilience. As a bonus action at the beginning of your turn, you can increase your armor class by 2 until the beginning of your next turn. For the duration, your movement becomes 0 and you have advantage on checks and saving throws against being unwillingly moved. Also for the duration, you cannot take opportunity attacks.

At 6th Level, the bonus to your armor class becomes a +3. At 10th level, it becomes a +4

Burning Strike

Beginning at 6th level, your flame-fueled strikes have a lasting effect on your enemies. Each enemy you make a melee weapon attack against on your turn must succeed on a Constitution saving throw (DC equals 10+ your Constitution Modifier) on their next turn or take 1d6 fire damage per attack that you made against them on your last turn.

This damage die becomes 1d8 at 10th level, and 1d10 at 14th level.

Power of The Nine Hells

Beginning at 10th level, you can cast the spell Hellish Rebuke at 5th level while raging once per long rest. Your save DC for this spell equals (8+ your proficiency bonus+ your Constitution score)

At 14th level, you can cast the spell once per short rest.

Scorching Presence

Starting at 14th level, whenever a creature enters your threatened area, they take fire damage equal to your Constitution modifier.