Wrack

This spell takes control over muscles in your target. Pick a target you can see within range. This target makes a constitution saving throw. On a fail, they will experience extreme muscle spasm. Their movement speed is halved and they have disadvantage on attack rolls. At the end of their turn they can attempt to make another constitution saving throw to break loose from the spell. The spell ends after 1 minute, when concentration is broken, or when a comstitution saving throw is succeeded by the target.