Concussion Magic

Originally a defensive wall magic, Cyrus Kuro, a "timeless mage" whose curiosity mostly leads to disaster, practiced and developed this magic purely from curiosity and had not a bad intention in his heart. Obviously, after a while post of his departure, people used this magic to demolish property and to oppose authority until one day, a man from Northern Fiore destroyed a town with this magic and eventually the magic council stopped hima nd all others. They banned this magic on domestic property and gave it the name "Concussion"