Illuminated Book of Law

This item is obtainable after completing the quest One Piercing Note. It is created by going into one of the south-western rooms in the abbey and using a Book of Law (obtained from Horror from the Deep and adding pages 1-4) on the table in there. For it you need 60 prayer and 60 craft and gain 10k xp in both of them for completing it. This has the same stats as Book of Law but with +8 Prayer bonus.