Arcane Whip

You cause 1 weapon or spellcasting focus that you touch to manifest a translucent whip of energy. A creature holding the affected object can, instead of making a weapon attack, make an attack with the whip, using your spell attack modifier, against a creature within 30 feet. On a hit, the whip deals 2d4 force damage, and the target is grappled. On subsequent turns, the creature holding the whip can use their bonus action to deal 1d4 force damage to a grappled creature, or move the trapped creature up to 5 feet in any direction (without moving over 30 feet away). A creature that is grappled by the whip makes a Strength saving throw against your Spell save DC at the end of each turn, ending the grapple on a success. If you use this whip to attack a new target while a creature is already grappled, the first target is immediately freed.

At Higher Levels. When you cast this spell at 2nd level, the duration is 1 hour. When you cast this spell at 3rd level or higher, the duration is 8 hours.