Lightless Torch

You touch one object that is no larger than 10 feet in any dimension. Until the spell ends, the object sheds a shadowy miasma in a 30-foot radius. A creature with darkvision inside the radius sees the area as if it were filled with bright light. The miasma doesn't shed light, and a creature with darkvision inside the radius can still see outside the radius as normal. A creature with darkvision outside the radius or a creature without darkvision sees only that the object is surrounded by wisps of shadow.
Completely covering the affected object with an opaque object, such as a bowl or a helm, blocks the effect. Though the effect doesn't shed light, it can be dispelled if the area of a darkness spell overlaps the area of this spell.
If you target an object held or worn by a hostile creature, that creature must succeed on a Dexterity saving throw to avoid the spell.