The Bai Ze Tu

A plain-looking leatherbound tome, showing no signs of wear, its cover embossed in ancient Chinese.

The words of this book shift as you read it, forming impossibly detailed diagrams of thousands of supernatural creatures. It is said this tome contains the knowledge of the Bái Zé, told to the Yellow Emperor over the course of a month and a day. Monster hunters the world over revere this book as the source of much of their knowledge.

The greatest bestiary to have ever existed, legends say the Bái Zé Tú was dictated to the Yellow Emperor by the legendary Baí Zé. It details the natures of over 11,000 distinct forms of supernatural beings, from ghosts to demons to dragons. The tome itself has been lost for millennia, but fragments of it remain, and are often sought out by various cabals of monster hunters.