Drown in Darkness

You target a creature's shadow and cause it to become a nexus for negative energy to flood around them. The creature must make a Charisma saving throw or magical darkness spreads from them to fill a 10-foot-radius sphere until the spell ends. The darkness spreads around corners and is considered to be an area of difficult terrain. A creature with darkvision can’t see through this darkness. Nonmagical light, as well as light created by spells of 5th level or lower, can’t illuminate the area.

Whenever a creature starts its turn in the sphere, it must make a Consitution saving throw, taking 2d6 psychic damage and 2d6 cold damage on a failed save, or half as much damage on a successful one.

The spell ends if targeted by a Remove Curse, a Greater Restoration or if it ever overlaps with an area of magical light created by a spell of 6th level or higher.