Electrify

You touch a single item that fits within a 5 ft. cube. After you finish casting this spell, any creature that touches it and fails a constitution saving throw will magically receive an electrical shock every second while touching. This shock deals no damage but is very uncomfortable. This effect is not negated by touching it through gloves, gauntlets, clothes or armor. The item also produces a very faint humming sound. If this item is being worn, wielded or carried, the discomfort and small muscle contractions will give the creature a disadvantage on attack rolls. Creatures might be spurned to touch the item unless determined to do so.

Once a creature failed or succeeded on its constitution saving throw, it doesn't roll again for this item until the spell ends.

Because you know this spell, you can use your action to cancel this spell effect on an item, even if you are not the caster of that spell on the item.