Disarming vines

Whenever you hit a creature with a melee attack, you can attempt to disarm a creature with vines that shoot from your wrist. When you successfully hit a creature with a melee attack, you may use your bonus action to make  the creature make a strength save against your warlock spell save. On a failed save, the vines rip the weapon from the targets hand, throwing the weapon up to 10 feet away to an occupied space. 20th feet are 5th level, 30 feet at 11th level.