Path of the Madman

Barbarians of the path of the madman leave a piece of their humanity behind and become a terrifying bringer of death. You sacrifice your mind in exchange for savage, brute strength. 

Blind Rage

Starting when you choose this path at 3rd level, when you rage, you can also enter a blind rage. While in a blind rage, you add half your barbarian level (rounded down) to any Strength, Dexterity, or Constitution saving throw, and subtract that same number from all Intelligence, Wisdom, and Charisma saving throws. In addition, you are immune to being Charmed or Frightened while blind raging. 

Savage Attack

Starting at 6th level, you can make one additional melee weapon attack as a bonus action whenever you use your Reckless Attack feature. In addition, you have resistance to Psychic damage while in your blind rage. 

Insane Beast

Starting at 10th level, while raging, whenever you hit a creature with a critical hit, you can immediately move up to half your move speed and make one additional melee weapon attack, against the closest hostile creature, without requiring an action. This movement doesn't provoke opportunity attacks. 

Bloodthirsty Critical

Starting at 14th level, while raging, you score a critical hit on a roll of 19 or 20.