Umbral Soul

You speak a word of power as a torrent of shadow erupts from the shard of garnet, engulfing your form. Your physical form and your equipment on you are transformed into shadow. You still retain the function of your equipment and the abilities of your physical form in addition to the effects of the spell. Umbral Soul ends if you are brought to 0 hit points, caught in direct sunlight, or brought under the effects of the Dawn, Sunbeam, or Sunburst spells. 

While Umbral Soul is active, you gain a flying speed of 10ft and can hover. You can enter and occupy another creature’s space, as well as move through objects as difficult terrain. You take 1d10 force damage if you end your turn in an object. A creature of your size or smaller is considered blind when you occupy its space as your shadow self consumes the target in a magical shroud. Attacks made by the same creature against you while in it’s space or leaving it’s space are at disadvantage. You can not occupy a creature’s space or an object’s space if you wish to attack or cast a spell. 

For the duration of the spell, if you are in dim light or darkness, attacks made against you are at disadvantage, you make dexterity saving throws with advantage, and you make stealth checks with advantage. In addition, you gain resistance to necrotic damage and vulnerability to radiant damage.