Deathwalker

To Barbarians death is something they bring about on a daily basis, but they rarely come so close to it themselves. To a Deathwalker, death is something they neither revere nor fear. They just accept it, embrace it, and they plan to bring as many foes with them as they can.
Deathwalkers have a special kinship with Morthos, but unlike a cleric or a paladin of Morthos, a Deathwalker is someone who looks to Morthos as someone to both conquer and admire at the same time. A Deathwalker is one of the most feared and misunderstood creatures on Starhelm.

Force of Death 

Starting at 3rd level, while raging, if you drop to 0 hit points you can choose to not fall unconscious. Death saves are still required as usual, following those same rules, but you may act normally as if you were conscious. If you fail all your Death saving throws you die as per the normal rules. This effect does not take place if you die instantly. Once you use this ability you must take a short or long rest before you can use it again.

Fuel of Death 

Upon reaching 6th level, when you hit a creature with a weapon attack you can choose to reduce your hit point maximum up to 0 hit points, to deal an equal amount of damage to the target of your attack as you reduced. This damage cannot be reduced or ignored by any means.

Soul Renewal 

Also, at 6th level you have learned how to return your soul back to its full potential. You can spend 30 minutes meditating and conducting a ritual to reset your hit point maximum. This can be done during a short or long rest.

Life of Battle 

Upon reaching 10th level, when you get hit by an attack you can use your reaction to take maximum damage on that attack to deal that same amount to a creature within 5 ft of you.

Roar of Death 

At 14th level a Deathwalker is so prepared to take on death that they refuse to lay down and die. When your persistent rage feature activates, you regain a number of hit points equal to your Barbarian level. In addition your hit point maximum increases to match your Barbarian level if it is lower. Deathwalker To Barbarians death is something they bring about on a daily basis, but they rarely come so close to it themselves. To a Deathwalker, death is something they neither revere nor fear. They just accept it, embrace it, and they plan to bring as many foes with them as they can.