Deepen Shadows

Over the course of a minute, the shadows in one 10 foot or smaller cube of your choice within range grow larger, deeper, and more concealing. An area that is brightly lit becomes dimly lit. The change is so gradual that it requires Wisdom (Perception) check against your spell DC to notice it. After 1 minute, torches, candles, lanterns, small campfires, and similar nonmagical sources of light are extinguished.

 

At higher levels. The size of the cube that can be affected increases when you reach 5th level (20 feet), 11th level (50 feet), and 17th level (100 feet).