Path of the Immortal Mind

Followers of the Path of the Immortal Mind use psionic energy to augment and modify the physical form. Followers of this path are known as Immortals. They use psionic energy to modify their bodies, strengthening them against attack and turning themselves into living weapons.
Their mastery of the physical form grants them their name, for Immortals are notoriously difficult to kill.

Psionic Resilience

Starting at 3rd level, your psionic energy grants you extraordinary fortitude during your rage. At the start of each of your turns while you are raging, you gain temporary hit points equal to your Intelligence modifier (minimum of 1) if you have at least 1 hit point

Uncanny Mind

Starting at 6th level, you can draw on your psychic power to escape death’s grasp during your rage. As a reaction when an attacker that you can see hits you with an attack while you are raging, you can use your reaction to halve the attack’s damage against you.

Psionic Fury

Beginning at 10th level, you can deal psychic damage with your weapon attacks. When you hit a creature with a melee attack, you can change the damage type of both your rage damage and any additional weapon damage dice you roll because of a critical hit to psychic damage.

Immortal Will

Starting at 14th level, you can draw on your reserves of psionic power to survive beyond death. At the end of your turn while at 0 hit points, you can immediately regain a number of hit points equal to your barbarian level + your Intelligence modifier. You regain the ability to do this when you finish a long rest.