Nameless Book of Spells

Nameless Book of Spells (無銘なる呪文書) is a powerful World Item grimoire from the age of the Eight Greed Kings.

Description
Legends has it that the Eight Greed Kings possessed numerous objects of power that allowed them to rule the New World. The greatest in their magical arsenal was said to be the Nameless Book of Spells. Worth a country's ransom, this tome is protected by strong magic, preventing anyone from touching it other than its rightful owner.

Appearance
The Nameless Book of Spells appears to be a thick book with many pages.

Abilities
According to Evileye, it is a magic item that holds untold power known to a very few like herself. Through unknown magic, it was said that all magic spells of the New World is recorded in the grimoire and possibly even newly created magic spells get automatically transcribed in its pages. It is unknown what kind of magic it is capable of, but its existence served as an example for the existence of the legendary 10th Tier Magic.

In the Web Novel, the grimoire was said to have records of spells up to the 10th tier. In fact, everything until the 11th tier or otherwise known as Super-Tier Magic by YGGDRASIL standards is recorded. Evileye stated that there is only one of the 11th tier was recorded in the grimoire. She even heard rumors about there being more than only one of such spells. In her own words, there might be other 11th-tier spells that were not found or recorded yet.

Trivia

 * It's highly probable this grimoire is a World Item due to the fact it could inscribe the spells that hailed from the New World rather than YGGDRASIL alone which not even something like a Game Encyclopedia could perform such feat despite the respective similarity they shared.
 * With Fluder's interpretation of the secret book chronicling countless monsters, it's unknown if this book's real name was called Eryuentiu or named after the Eight Greed Kings' floating castle.