Sorcerous Sword Index

The Sorcerous Sword Index (魔剣目録, Maken Mokuroku, "Magic Sword Catalogue") is an enchanted scroll used to seal powerful weapons.

Story
"A scroll-shaped tool that seals the magical, demonic, holy, and evil swords collected by Shāng Bù Huàn. When it was brought out of Xī Yōu, it contained 36 swords, but now, after two swords were removed and three were added, it contains 37 swords."

The Sorcerous Sword Index was created by Tiān Gōng Guǐ Jiàng.