Liber Daemonicum:

Gains the Mundane Artifact: Liber Daemonicum The wielder gains a +2 to and lore related information on Daemons. Whenever a Daemon is destroyed by the wielder, the Daemon's name is written the artifact. Once per session, the wielder my absorb the Daemon's name from the book and gain an effect equal to the Daemon's ability. (Up to the RP Mod) To upgrade this artifact, fill it with names of powerful Daemons. Good 0/3 -> Great 0/5 -> Legendary 0/8