"But this could still be useful. Let's talk about a dueling sword called Whitting. When in battle, this sword will scatter when its owner is at a disadvantage, and amongst them, a miracle would occur…it's a spell that can accurately avoid damage and cause the sword to be sharper. When both are assembled, the sword's destructive power will increase exponentially."

Toaru Majutsu no Index New Testament vol.4 main.31