Tungsten Ballsack

As a reaction, you can cast TUNGSTEN BALLSACK to turn an enemy's Ballsack tungsten, this will reduce their movement speed to 0, for 10 minutes, unless they have an 18 or higher for strength, in which they can roll a DC 20 strength check, if they succeed, their movement speed is only halved. When used as a 5th level spell, it becomes permanent. If the caster fails their spell save DC, then an ally of their choice gets targeted, but it isn't permanent.