Path of the Blood Herd

Hailing from a brutal tribe, Blood Herd barbarians are used as meat shields for their companions. Raised to take a beating and use that pent up rage in a series devastating blows. Learning to channel their anger into something more sinister, eventually their anger can burn up their foes or cause their enemies to wither away into nothingness. 

Thick Skin

From Level 3, while raging, you may add your strength modifier to your armour class.

Iron Knuckle's

Starting at level 3, while raging, your unarmed attacks are considered as melee weapons and now deal 1d6 + Your Strength Modifier.

At level 8, your damage dice becomes 1d8.

At level 12, your damage dice becomes 1d10.

At level 16, your damage dice becomes 1d12.

Agent of Chaos

Your unarmed attack are imbued with the dark energy that courses through your blood. 

Starting at level 6, while raging, your unarmed attacks gain an additional 1d10 necrotic damage.

At level 12 your unarmed attacks gain an additional 2d10 necrotic damage.

At level 16 the necrotic damage you deal lowers the hit point maximum of the afflicted and cannot be regained until completing a long rest.

Vile Blood

Your blood has become vile and putrid.

Starting at level 10, while raging, you gain Immunity to poison damage and resistance to necrotic damage.

Destructive Rage

At 14th level, once per long rest while raging, you can unleash a devastating pulse of necrotic energy. Everyone in a 20ft radius sphere of you must succeed a constitution saving throw DC(8 +your constitution modifier + your proficiency bonus) or suffer 4d12 necrotic damage, or half as much on a successful save. You have vulnerability to all damage, until the beginning of your next turn

Undying Rage

At level 14, once per long rest while raging, when falling to 0 hit points you can choose regain all hit points for 1d4 rounds. After those rounds are complete you fall unconscious  at the end of your turn losing 2 death saving throws.