A black, nonreflective, incorporeal 10-foot cube appears in an unoccupied space that you can see. Its space can be in midair if you so desire.
A void materializes, a dark, formless cube that absorbs the world's light. An intangible abyss, it ensnares minds within its shadowy grasp. As your focus commands, the obsidian void shifts and drifts, a silent harbinger of psychic torment on the move.