Esteldir's Hollow Sky

You open a hole in the upper atmosphere. An unearthly light shines down on a location you specify within range. Until the spell ends, a 30-foot-radius cylinder of cosmic radiation glimmers there (bright light is unaffected, darkness becomes dim light), dispelling non-magical darkness and magical darkness created by any spell of a lower level. The spell must be cast in a location where the sky is visible for its full radius. If not, the spell fails.

When the cylinder appears, each creature in it must make a Constitution saving throw, taking 6d10 radiant damage and one level of exhaustion on a failed save, or half as much damage with no additional effects on a successful one. A creature must also make this saving throw whenever it ends its turn there.

If you are within 120 feet of the cylinder, you can move it up to 60 feet as a bonus action on your turn.