Path of the Corrupt

Whether it is insanity or just a need for rage to be set free form its external cage, the souls who follow this path are those who can't come back. The abyss fills there souls with enchanting darkness, one that you can't help but set free.

Insanity

At 3rd level,  the darkness within your soul starts to take hold of you. Shadows appear to spew from you in dark and twisted shapes making you resistant to necrotic damage. Whenever you Rage, your weapon gains an added damage equal to your Barbarian level divided by 2. The damage is necrotic. However, when you are in a rage you lose the ability to speak and understand any language with an exception to Abyssal. After the rage is done, you real from the mindlessness that consumed you, forcing you to be unable to rage for a single turn.

Bloodlust

At 6th level, if you are in a rage and kill someone you can make an extra attack against a person within your attack range.

Abysmal Onslaught

At 10th level, the darkness within you grows far more intoxicating. As an action, you can charge forward with reckless abandon slashing at foes like a whirlwind of death and destruction. You run forward in a forty-foot line, hitting everything within five feet of your path with advantage. Each creature can only be hit once. The terrain around the creature you hit becomes rough terrain. After this is done, the rage ends.

Psycopath of Darkness

At 14th level, the shadow within your soul has gotten to like you. Whenever you rage you can take a bonus action to have help for three turns. You gain an added immunity to necrotic damage. With each attack, all enemies within twenty feet of you make a wisdom saving throw if they fail they are frightened. If you attack anyone who is frightened by you, you double the rage damage added to your attacks that you do to the target. However, despite this shadow wanting to help out, giving a creature equal control of your mind can only have negative consequences. You are immediately taken out of rage, are considered prone for a single turn and are vulnerable to Phycic and Radiant damage for that turn. You also have a disadvantage against any spell that would affect you mentally.