Grimoire

A particular kind of arcane spellbook consisting of 13 or more spells and totalling at least 1200 MP (Mana Power). Only for the most elite of wizards.

(This definition is courtesy of the University of the Advanced Wizards Witnesses of Muinch, or UAWWM)

'Say, That's a nice grimoire you've got there.'
'Thanks! I plan to participate in much wizardous mischief making use of the 13 spells I've got.'