You can move through certain objects. You have the ability to move through other creature's spaces as if it were difficult terrain.

You can additionally move through thin walls/surfaces (DM's discretion). Movement in this way counts as difficult terrain for you.

You have a flying speed of 30ft

Once per long rest as an action you can gain the benefits of the Etherealness spell for 1 minute. 

You step into the border regions of the Ethereal Plane, where it overlaps with your current plane. You remain in the Border Ethereal for the duration. During this time, you can move in any direction. If you move up or down, every foot of movement costs an extra foot. You can perceive the plane you left, which looks gray, and you can’t see anything there more than 60 feet away.

While on the Ethereal Plane, you can affect and be affected only by creatures, objects, and effects on that plane. Creatures that aren’t on the Ethereal Plane can’t perceive or interact with you unless a feature gives them the ability to do so.

When the spell ends, you return to the plane you left in the spot that corresponds to your space in the Border Ethereal. If you appear in an occupied space, you are shunted to the nearest unoccupied space and take Force damage equal to twice the number of feet you are moved.

This spell ends instantly if you cast it while you are on the Ethereal Plane or a plane that doesn’t border it, such as one of the Outer Planes

After 1 minute, or if you end this effect on yourself as a bonus action, you return to the plane you left in the spot that corresponds to your space in the Border Ethereal. If you appear in an occupied space, you are shunted to the nearest unoccupied space and take Force damage equal to twice the number of feet you are moved.

You don't require air, food, or drink. Your age is frozen at how old you were when you died. You still need to rest, however. During a long rest you must spend 4 hours in a trancelike meditation. During this meditation you are only somewhat aware of the Material Plane. Voices originating from the Material Plane sound far away, and you cannot see the Material Plane in this state.

You passively emanate harmless sensations such as feelings (sadness, anger, loneliness, happiness, being watched, etc.), sensory perceptions (smell, flickering of lights, cold spots), etc. in a 30ft radius centered on you. These sensations occur often outside of your control. You can never have more than two Manifestations activated at once (your choice if you have one or two). You can choose ghostly manifestations or roll on the Ghostly Manifestations table. 

Ghostly Manifestations Table

1 - Candles and lights flicker in your presence

2 - A distinct smell is present around you (stench of death, cold stone, moss, pine, etc.)

3 - Others feel chilled in your presence, regardless of what the ambient temperature is

4 - Anyone within 30ft of you can feel your emotions emanating from you

5 - Distinct sounds can be heard softly in your presence (creaking of wood, waves, intelligible whispering)

6 - Inanimate objects weighing no more than 5lbs that aren't being carried or worn move randomly and harmlessly (vibrating slightly, floating in the air, etc.) you have no control over how the objects move or which objects are affected.

7 - No Manifestations are present, a distinct feeling of something missing is felt around you.

8 - You choose which manifestations are present. 

You know the languages you knew in life.

You can increase one ability score by 2, and another by 1.

You have Darkvision for up to 60ft. You can only see in shades of gray.