### Your Filchonomicon and You
This mildly sentient tome contains hidden bits of knowledge about pilfering, con artistry, and general skullduggery, replaces your spellbook following all the same rules as a spellbook, and acts as a set of thieves' tools that you are proficient with. As part of the process of bonding to a new master, the Filchonomicon must be placed in a dark area with one's current spellbook for an hour, then you can retrieve the Filchonomicon, your old spellbook is oddly absent...If the Filchonomicon is lost or destroyed, it can be summoned again by performing a ritual that takes 1 hour and consumes 50 gold per wizard level of paper, steel, and a pilfered object.