Fade Away. On your turn, as an action, you can fade from the Material Realm and disappear into the ethereal plane. While you remain faded away, you cannot interact with the Material Plane, and effects on the Material Plane cannot interact with you, including spells and creatures. However, you can move and hear as normal, and see everything in shades of grey. This effect lasts for 1 minute, or until you use a bonus action to end it. When the effect ends, you reappear in the Material Plane, in the closest unoccupied space you disappeared from. Once you use this feature, you cannot use it again until you complete a long rest.

Planar Outcast. You may cast the feather fall spell once per day, targeting yourself only. When you reach 3rd level, you may cast the blur spell once per day. When you reach 5th level, you may cast the blink spell once per day. Intelligence is your spellcasting ability for these spells.

Arcane Origins. You gain proficiency in the Arcana skill.

Size. You still possess the height of your former humanoid self, but your nearly insubstantial nature has drastically reduced your weight to a quarter of your original weight. Your size is the same it was before the accident.