Deprivation of Sleep

You think of a creature you have seen before. Then, you create horrors in your mind and unleash them into the mind of the creature, offering your own peace as payment. To do this, you chant incantations for 1 hour. The target must make a Wisdom saving throw. On a failed save, neither you nor the target can rest for the next 8 hours. On a successful save, both you and the target can rest normally.