Dreamworld

By reciting a passage from an old, forgotten text, every humanoid with a 15-foot cube centered on the caster is rendered Unconscious. They then must roll a Wisdom save; if the humanoid's Wisdom is less than 16, it automatically fails this save. If a creature succeeds this save, it wakes up. Affected creatures which fail their save take 2d4 psychic damage per hour while unconscious, in addition to 2d4 Psychic damage immediately when affected.