Truth Seeker

you want to hit harder and crit more and tank more damage but at what cost

Righteous wrath

Upon taking this subclass you lose the ability to use a barbarians rage and instead gain righteous wrath when you use righteous wrath you gain damage resistance and magic resistance when you kill a creature with 10 or more intelligence you take psychic damage equal to the amount of hit dice the creature has in total this is not lessened by righteous wrath

White weapon

As a bonus action you can activate the white blade when activated you crit on a 16 and have advantage on the first attack of your turn you also take double psychic damage 

Dance with death

As an action you can activate the dance with death while this is active you have advantage on all attacks and saves while enemies have disadvantage on all attack rolls against you as well you crit on a 16 after combat ends this form drops you take double psychic damage from all enemies you killed in the battle 

True seeker

At this point you have mastered the wrath and take one quarter psychic damage as well even when your forms are not active you crit on a 18