Tether

A spectral chain lashes out to a creature you can see withing range. The creature you target must succeed a strength saving throw or be tethered to you and unable to move out of the spell's range centred on you. A large or larger creature has advantage on this saving throw. If the target succeds on this save, the chains shatter and the spell fails.

A creature that is tethered to you can use it's action to make a strength saving throw against your spell save DC to break itself free or if you move in a direction that would make it longer within the spell's range. On a success, the target is freed.