Shadow is a spell in 5th edition.
Casting Time: 1 action
Components: S, M (a small piece of black silk or a lump of smoke-colored glass)
Duration: 1 hour
Casters: Arcane Trickster, Artificer, Bard, Eldritch Knight, Ranger, Sorcerer, Warlock, Wizard
Domain Spell for: Night Domain, Oath of Treachery
You touch one object that is no larger than 10 feet in any dimension. Until the spell ends, a magical shadow fills a 40 foot sphere centered on the object. The area is now covered in dim light, regardless of the previous lighting conditions (bright light, dim light, or darkness).