The Super Horn is a new item in Mario Kart 8. It is somewhat of a defensive based item. When used it creates a blast radius when used around the character. It is similar in radius to the blast of a Bob-Omb, that hits other players and destroys most items around you - including Blue shells about to hit the player from above. Any players that are hit by the blast of the Super Horn will lose some control of their vehicle when it happens.