Castle Falkenstein: The Lost Notebooks of Leonardo da Vinci
Principia de Mancipium Potentia Magica Universalis
People will kill for them. Wizards will sell their souls for them. Wars could be fought for them. Kingdoms could topple if they fall into the wrong hands.
What are they? They're the tomes everyone in New Europe wants to get their hands on. Based on the writings of Aristotle, written... [click here for more]