Book of Rituals

This Book of Rituals belongs to the mage Vithal but is in the possession of an Innkeeper in the Underdark. Vithal asks you to return it to him as a part of the quest A Mage's Proposal.
To obtain this tome, you can either pay the Innkeeper or approach him while under Adalon's Drow-form illusion, in which case he will give you the book for free.
==Description==