Void Drain

You call forth the void and it starts to drain the life from every living creature in a 30-foot cube centered on a point you choose within range. Each creature in that area must make a Constitution saving throw. Constructs and undead aren’t affected, and plants and water elementals make this saving throw with disadvantage. A creature takes 6d8 necrotic damage and 6d8 psychic damage on a failed save, or half as much damage on a successful one.

Nonmagical plants in the area that aren’t creatures, such as trees and shrubs, wither and die instantly. The ground, the plantlife, the entire world around it starts to lose its color