Grimoire

Grimoire (しい魔導書) is a type of item form YGGDRASIL.

Description
A magic item in the form of a spell book.

Appearance
A dark black tome with a gaping skull face on its front cover with blood red lines.

Abilities
Grimoire act similar to magic scrolls as anyone can use them, though contain more spells than the latter.

Trivia

 * Momonga collected quite a few of this item and gave them to Albedo to enhance her witch costume.