Contorting the blood of one creature that you can see within range, you wrack it with agonizing magical pain. The target must succeed on a Wisdom saving throw or else become stunned for the duration. It repeats the saving throw at the end of each of its turns, ending the spell on a success.

When a creature that has blood and less than half of its hit points fails the saving throw, it takes 1d8 psychic damage for each turn that it remains stunned by this spell. This damage cannot reduce a target below 1 hit point. This spell has no effect on constructs or undead.