Tungsten Balls

To cast this spell, you must make eye contact with the target as you cast the spell. Otherwise, the spell fails and the casting is wasted. 

Choose one creature within range. That creature must make a DC13 STR save. On a fail their movement speed becomes 0 and they take 4(1d8) bludgeoning damage at the start of each of their turns until the spell ends. On a success, the creature’s speed is halved and they take no damage. They can also use their balls as an improvised weapon.