You toss a nonmagical shoe toward a creature you can see within range. The shoe grows to tremendous size before falling onto the target. The target must make a Dexterity saving throw. On a failed save, the target takes 5d10 bludgeoning damage and is knocked prone and restrained. On a successful save, the target takes half the damage and isn’t knocked prone or restrained, and the spell ends.   Until the spell ends, you can use a bonus action on each of your subsequent turns to deal 2d10 bludgeoning damage to the target as the shoe grinds the target into the ground.   At the end of each of its turns, the target can make a Strength saving throw, breaking free on a success. When the target breaks free or when the spell ends, the shoe shrinks to its normal size, becoming a nonmagical shoe once again.