Path of the Blue Wraith

A Barbarian on the path of the Blue Wraith has become one with ethereal magics, allowing them to adopt a spectral form during combat. This power is granted from the magical substance Lyrium, and can only be wielded by one of a strong body and mind.

Lyrium Ghost

Upon choosing the Path of the Blue Wraith, you attune to the Lyrium in the form of runes upon your skin. Whenever you rage, these runes manifest, and your form becomes ghostlike and more difficult to track. Your AC increases by 1, plus your Wisdom modifier.

At 10th level, you gain resistance to all magical damage and gain advantage on saving throws against spells while Lyrium Ghost is active

Wraith Strike

Whenever Lyrium Ghost is active, you can use your spectral form to reach inside a creature as a bonus action, doing piercing damage proportional to 1d10 plus your strength modifier and proficiency bonus. The target must make a DC13 constitution save or take additional piercing damage equal to your strength modifier plus your proficiency bonus.

At 10th level, when you make an attack with the Wraith Strike, the damage is doubled, and if the target fails the constitution save and is below 50hp, they are killed outright.

Spectral Attunement

The magic within your body grants access to three abilities you can use only while Lyrium Ghost is active:

Spectral Pulse: You can cast the spell Spectral Pulse as a bonus action. This deals 3d8 force damage within a 5ft radius around you. Targets hit by the attack must make a DC15 constitution saving throw or be pushed back 10 feet and knocked prone. If they hit a sturdy object when pushed back that prevents them from going the full 10ft, they take an additional 1d6 bludgeoning damage from the impact.

Wraith Step: You can cast the spell Wraith Step as a bonus action. This allows you to travel up to double your movement speed in the Ethereal Plane. Only creatures who can see within the Ethereal Plane or are there themselves gain opportunity attacks against you. If a creature makes an opportunity attack but are not also in the Ethereal Plane their attack does half damage.

Spectral Shift: You can cast the spell Blink as a bonus action.

You gain a number of uses for these abilities equal to your wisdom modifier.

Reflection

Whenever you take damage from a magical attack while Lyrium Ghost is active, you can choose to take full damage, and in turn add half of the damage as force damage to your next attack.