51b9d570_ecrets_for_GameCube___GameFAQs__How_to_Unlock
[Unlockable] Prophet's Notebook [How to Unlock] 
To get Prophet's Notebook you must combine (in this order) Blank Notebook with Magic Pen, this will tell you if Magnus have changed in camp
Baten Kaitos: Eternal Wings and the Lost Ocean Cheats, Codes, and Secrets for GameCube - GameFAQs