Path of Undeath

The undead are tireless, relentless, and fearless. By letting go of the burdens of life and embracing the darkness of unlife, the Path of Undeath barbarian becomes a source of terror and destruction on the battlefield. These barbarians walk further and further into the jaws of death, becoming one with the necromantic magics of the worlds and using it to push their bodies past their mortal limits. 

Horrific Rage

Starting when you choose this path at 3rd level, your rage brings you closer to undeath. Visually this may take many forms, such as crying tears of blood, or giving the impression that your skin is rotting and falling off the bone, or simply unleashing a burst of dark energy. When you first enter your rage, every creature that you choose within 30 feet of you that can see you must make a wisdom saving through. the DC equals 8 + your proficiency bonus + your Constitution modifier. On a failure, the creature is frightened of you until your rage ends. A frightened creature may repeat the saving throw at the end of each of its turns, ending it on a success.

Undead Nature

At 6th level, your body has grown closer to undeath. You no longer need to eat, drink, or breath. 

Undying Servants

Also at 6th level, necromantic energy radiates from you while you are raging. Whenever you kill a medium or smaller humanoid with a weapon attack while raging, they rise as a zombie under your control. The zombie follows your verbal orders to the best of its ability. When your rage ends, all zombies created by this effect die.

Vampiric Blade

At 10th level, you gain the ability to absorb the lifeforce of your enemies. Whenever you deal damage with a melee weapon attack while raging, you deal an additional 1d6 necrotic damage and heal for the necrotic damage done.

Necrotic Blood

At 14th level, whenever you rage your blood turns black and becomes cursed with necrotic energy. Whenever a creature within five feet of you deals damage to you with a weapon attack while you are raging, they take 1d4 necrotic damage and you heal for the necrotic damage done.