Dream Walk

You attempt to enter the consciousness of another humanoid. The target must be unconsciousness and makes a wisdom saving throw against your spell save DC. Upon a success, the spell fails and the target is aware of your attempt, as well as they are immune to your attempts to dream walk through them for the next 7 days. On a failure, you are able to possess the targets body for the duration of the spell, using any physical ability which they are able to use. You are unable to use any magical ability of the target, but can attempt to use your own magic through the possession. To use your own spells, you must make a DC 20 intelligence saving throw or the spell fails and the spell slot is expended. For the duration of the spell, the target views the actions you take from their physical body as if they were in a dream. 

Upon taking any damage while dream walking, the target you are possessing takes full damage regardless of what resistances they may have, as well as you take half the damage amount in psychic damage. Your physical body is vulnerable to all damage types for the duration of the spell.