Dusk

The light of the world darkens  on a location you specify within range. Until the spell ends, a 30-foot-radius, 40-foot-high cylinder of glooming darkness sits there.  Anyone inside the cylinder can't see out of it and vice versa.

When the cylinder appears, each creature in it must make a Constitution saving throw, taking 4d10 necrotic damage on a failed save, or half as much damage on a successful one. A creature must also make this saving throw whenever it ends its turn in the cylinder.

If you’re within 60 feet of the cylinder, you can move it up to 60 feet as a bonus action on your turn.