Thunderous Hold

A cloud of lighting forms over a target before letting out a stunning sound of thunder, roaring down upon them if they are within range. Target must make a Constitution saving throw as they are struck by lightning, taking 1d12 thunder damage and become stunned for 1 minute on a failed save. On a successful save they take half the damage and are not stunned. On Subsequent turns on a failed save, the target must make a Constitution saving throw at the start of each of their turns. On a fail, they remain stunned and take 1d6 damage and on a success, the spell effects end.