Curse of the Bottomless Sea

You tap into the mind of a creature you can see. That creature feels as if they have suddenly been thrown to the bottom of the ocean. The target must make a Wisdom saving throw. On a failed save, the target becomes restrained for the duration. At the end of each of the target's turns before the spell ends, the target must succeed on a Wisdom saving throw or take 6d10 psychic damage. On a successful save, the spell ends.