Contagious sleep

Small visual distortions spread slowly within a 30-foot-radius sphere centered on a sleeping person you choose within range. The distortion spreads around corners, and it lasts until the spell ends. When a creature moves into the spell’s area for the first time on a turn or starts its turn there, that creature must succeed on a Wisdom saving throw or it suffers one level of exhaustion and, begins to hallucinate. Any levels of exhaustion caused by this spell go away when the spell ends. If a creature would reach 6th level exhaustion currently affected by the spell, instead of killing that creature the spell sends the creature into a magical slumber. Whenever a creature within 30 feet would fall into a magical slumber copy this spell centered on that creature. (Copies do not use spell slots or reactions and can do not require being concentrated on as long as the original spell has not ended)