On Coming Forth By Day. This clerical tome has been compiled over countless generations by the priests of the Dead, and contains a description (but not the actual secrets) of all clerical spells from the necromantic sphere. It also contains the procedure for fashioning scarabs of protection by a priest of at least 9th level.
Any priest who reads this magical tome and ponders its contents for over a month gains minor access to the necromantic sphere (if she or he had none before) or major access to the necromantic sphere (if he or she had only minor access before). A priest who already has major access to the sphere achieves an improved understanding of necromantic spells, gaining a permanent +1 bonus on his or her saving throws against these spells (whether cast by a wizard or priest).