Monks of the Way of the Ghost study methods of ethereal transport and can harness ki energy to manipulate the forces of life and death.

Ghostly Strike

Starting at 3rd level when you choose this tradition, you can imbue your attacks with necrotic energy. Once per turn, you can use 1 ki point when you hit with an unarmed strike to do an extra 1d10 necrotic damage with the attack.

Eyes of the Ghost

At 7th level, you can see into the ethereal plane out to 10 feet. You can also target creatures there with your attacks.

Disappear

Starting at 11th level, when you are in an area of dim light of darkness, you can use your action to become invisible. You remain invisible until you make an attack, cast a spell, or are in an area of bright light.

Ethereal Movement

Starting at 17th level, you can spend 4 ki points to use a bonus action to enter the ethereal plane. While on the ethereal plane, you can attack creatures that are on the material plane as if you were on the material plane, but you must spend 1 ki point per attack.

After 1 minute, or when you use a bonus action to end this effect, you return to the plane where you originated at the spot you currently occupy. If this spot is occupied by a creature or object, you are pushed to the nearest unoccupied space and take 1d10 force damage per 5 feet you are moved.