As a Bonus Action, you assume a spectral form, gaining the benefits below for 10 minutes or until you end them (no action required). Once you use this feature, you can't use it again until you finish a Long Rest unless you destroy one of your soul trinkets from Tokens of the Departed (no action required) to restore your use of it.
Flight
You gain a Fly Speed of 10 feet and can hover.
Hazy Form
Attack rolls have Disadvantage against you.
Incorporeal Movement
You can move through creatures and objects as if they were Difficult Terrain, but you take 1d10 Force damage if you end your turn inside a creature or an object.