I would have tot hrow in another vote for Relics and Rituals. It is definitely the best third party book of magic I've seen so far. And, for non-realms games it is more balanced. There are actually very few spells to look out for in the things (Sacrifice Spell, Salamar's Quiet contemplation, and Convert are the only ones that spring to mind). The items are all very interesting as well, as are the ritual casting rules and True Rituals. I'm sure my party will love the greater magic weapon ritual when they've got a war to fight.