The Dark Side of Krynn
This is a green spellbook that Evanora and Ven found in the secret hold of a wagon at Yandons’s Trading Post.
When a low level wizard tried to read it, he was rendered unconscious. When that same wizard later came into direct contact with the book to his skin, it caused the wizard to turn into some type of creature (possibly undead)
The book now has a piece of the wizards flesh seared to the front of it. The skin still looks juicy.