Phantom

You have an inexplicable bond with the spirit realm. Ghosts of those who have passed often make themselves known to you, and sometimes provide information which is otherwise inaccessible. With time, you may become as elusive as the ghosts with which you speak.

Ethereal Sense

When you choose this archetype at 3rd level, you gain the ability to see and hear 60ft into the Ethereal Plane.

Spiritual Medium

Starting at 3rd level, while touching an object that is in some way tied to the soul of a willing creature that has passed, you can use an action to summon their spirit to an empty space you can see in the ethereal plane.

Ancestral Guide

Starting at 9th level, the ghost of one of your ancestors has chosen to watch over you. They travel with you but remain on the Ethereal Plane. While they are within 60ft of you, you cannot be surprised and have advantage on Wisdom (Perception) and Intelligence (Investigation) checks.

Coordinated Strike

By 13th level, you have gained the assistance of your ancestral guide in combat. When you attack a creature, your ancestral guide briefly shifts to the Material Plane and attacks them simultaneously. On a hit, the attack counts as a Sneak Attack and deals an additional 2d6 force damage.

Etherealness

Starting at 17th level, you can use the bonus action granted by your Cunning Action to shift from the Material Plane to the Ethereal Plane, or vice versa. While in the Ethereal Plane, you can see and hear 60ft into the Material Plane and can only affect or be affected by other creatures on the Ethereal Plane.