Warrior of the Empty Body

Your body is now only a vessel for your soul and you can push it pass its limit.

Level 3: Second Chance

When you fall to 0 hit points you can use your reaction to spend a focus point to force life back into your back and regain hit points equal to your monk level.

Ghostly Presence

3rd-Level Ghostly Presence

Your undead presence has left you with a frightening visage cause those that face in combat to run away. The first time you hit a creature you can force them to make a Wisdom Saving Throw. On a failed save the creature is frightened of you. Additionally, while a creature is frighten any attack you does an additional cold or necrotic damage equal to a roll of your martial arts die.

Beyond the Grave

6th-Level Beyond the Grave

You have learned to separate your soul from the husk of your body on the ground. As an action you can spend 2 focus points to leave your physical body and enter a Hollow form for 1 minutes (or until end by you no action required), while Hollow you can not move your physical body and it is still vulnerable to damage. Additionally, you gain a fly speed equal to your walking speed and the following effect:

Haunting Strikes: While Hollow you can use your Wisdom modifier for attack and damage rolls and unarmed strike from your Hollow form have a 10 feat reach. However, your Ethereal form is vulnerable to radiant damage.

Phantom Step: Once per turn while you are Hollow you can teleport to an unoccupied location with 30ft of you. However you can not move more than 2 times your walking speed from your body.

Lingering Death: You have resistance to non-magical bludgeoning, slashing, and piercing damage. However if your body takes damage you are force to back into your body unless you choose to gain a point of exhaustion.

Vessel of Death

11th-Level Vessel of Death

You mastery over death has effect your Hollow form, gaining you more usage of your undead nature. When you use Beyond the Grave you may now choose from a list of Hollow forms: Eidolon, Puppeteer, and Wraith.

Eidolon: Your form is blurred making melee attack against difficult. Attack roll against you within 5ft are made with disadvantage.

Puppeteer:  When you use your Phantom Step you can now use your action to inhabit the body of a creature. While inhabited the creature is restrained and can use its action to make a Charisma Saving Throw to force you out. On a success, you take 3d6 psychic damage.

Wraith: You can now drain life from those you harm. When you make unarmed strike while Hollow you now regain hit point equal to that damage rolled.

Death Howl

17th-Level Death Howl

When a creature is reduced to 0 hit point within 60ft of you use your reaction to spend 4 focus point to cause the creature to scream. Any creature that you choose within 30ft of the howling creature makes a Constitution Saving Throw. On a failed save, a creature is reduced to 0 hit points. On a success, a creature gains the frightened condition until the end of your next turn.