Completion of this quest will flag your character has having completed all the quests in Book XV of the Epic quest series.
'Wow, yet another book to help you through. That Standing Stone Games, they keep adding more and more content for you, the beloved player. They must be saints, I tell you. Their selflessness really is something for others to learn from, don't you think?
'OK, enough of me prattling on, time to get down to business!'