Curse of Binding

You curse two targets, manifesting iron shackles around their ankles, chaining them together. Choose two creatures you can see within the spell's range who are also within 20 feet of each other. Each creature must make a Wisdom saving throw or become cursed. A willingly creature can choose to fail the saving throw. While two creatures are cursed by this spell, they cannot willingly move further than 20 feet away from one another.  

If only one target is cursed, while maintaining concentration on subsequent turns, as a bonus action, you can attempt to curse a second target within 20 feet of the cursed target. If both targets succeed on their Wisdom saving throw during the initial cast, the spell ends. Remove curse will end this spell early.