The sword is summoned out of an opened grimoire, inside which it is stored in the form of writing. The user can easily summon the sword at will without consuming any magical power.
As well as cutting through magic and spells with its edges, the sword has a special ability, Causality Break 「因果解放 Inga Kaihō, Viz: "Fate Release"」: It absorbs and removes the effects of spells by severing the cause-and-effect relationship. The sword emanates tendrils of Anti Magic that touch those affected by magic and then draw back into the sword, turning the blade black. Since the ability affects causality, these tendrils negate not only the magic but also its effects, such as the tissue damage caused by a magical poison; the other Anti Magic Weapons are unable to do this and affect only active magic. This ability is even strong enough to negate Reincarnation Magic.