You sprinkle yourself with soot, and step into the shadow of another creature, disappearing into the darkness found in the fold of their clothes and the curve of their chin. An unwilling creature can make a Charisma saving throw in order to resist your attempt to hide, ending the spell on a success.
For the duration of the spell you are considered Invisible and Hidden, cannot perform any motions or actions (such as attacking or casting a spell), and you cannot speak. You move with the targeted creature and are able to see and hear with your normal senses. In addition, you can communicate telepathically with the target, if the target is willing.
A creature that succeeds on an Intelligence (Investigation) check against your Spell save DC can discern your presence.
* - (A sprinkle of soot.)
You shoulder consider making this available for the Sorcerer so that a Shadow Sorcerer can use it. Otherwise this is a very interesting spell.
Noted! Thanks Cyb3r!
A very interesting spell. Since it's an illusion spell, is the target's body physically altered for the duration or is it actually standing within 5 ft of the creature it "shadows"? If physically assuming the shape of the creature's shadow (and "sticking" to it), maybe transmutation school?
What happens when a creature discerns your presence but not other creatures?