Spiny Shell

The Blue Shell is an item from the Mario Kart series. When used, the shell will immediately fly to the racer in first place, hover for a few seconds, and make contact with the racer to make a blue explosion similar to that of a Bob-omb. When used in first place, the Blue Shell will fly around the course and target the person in first place, in this case, the one who activated the shell. The affected racer is flung up into the air, losing a few seconds.