You magically tether a Large or smaller creature you can see within range to the ground. The target must succeed on a Strength saving throw or be magically bound to a point of your choice within 5 feet of it until the start of your next turn. While magically bound, the target can’t move more than 5 feet away from that point.    If the target is an Undead, it has disadvantage on the saving throw and takes radiant damage equal to your spellcasting ability modifier.