Path of the Fractured Mind

Your psyche has broken into pieces, the sum of which has become greater than the whole, allowing you to tap into previously unknown psionic power. 

Body of Intellect

When you Rage, you gain temporary hit points equal to your INT modifier + your Barbarian level. If a creature hits you with a melee attack while you have these hit points, the creature takes 5 psychic damage. This damage increases by 5 at 6th level, 10th level, and 14th level. You lose these hit points when your Rage ends.

Psychic Slivers

When you Rage, or as a bonus action while Raging, you send out slivers of your psyche which attempt to embed themselves into the minds of creatures within 30 feet of you. When you activate this ability, choose a number of creatures equal to your Intelligence modifier to make an Intelligence Saving Throw against your Spell Save DC (8 + INT + proficiency bonus). Whenever a target that fails this saving throw makes an attack roll or a saving throw before your Rage ends, the target must roll a d4 and subtract the number rolled from the attack roll or saving throw. This ability ends when your Rage ends.

Mental Fortitude

When you fail a saving throw other than an Intelligence Saving throw, you may reroll as an Intelligence saving throw instead. You can use this ability once per long rest.

Psionic Vision

You gain a Blindsight of 30 feet.

Mass Hysteria

When you activate your Rage, you may choose up to 5 creatures within 30 feet of you. These creatures each gain 5 temporary hit points and the benefits of your Body of Intellect feature.