Black Rain

Create a dark cloud over a location you specify within range. Until the spell ends, a 10-foot-radius, 40-foot-high Cylinder of flame-like shadows pelt the area.

When the cylinder appears, each creature in it must make a Constitution saving throw, taking 5d8 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. A creature makes this save only once per turn. A Plant has Disadvantage on the save.

Nonmagical plants in the area that aren’t creatures, such as trees and shrubs, wither and die instantly.

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

Using a Higher-Level Spell Slot. The damage increases by 1d8 for each spell slot level above 4th.