Perseus's Guide to Vile Substances! The wayward alchemical enthusiast regails the reader with a cautionary brief on those substances found in D&D 3.5's classic "Book of Vile Darkness," with an additional new substance--Axelroot--thrown in for good measure.
+ 11 new substances integrated into the system found in Perseus's Guide to Substances, with all relevant rules blurbs reprinted here for convenience's sake.
+ Colour commentary from the well-traveled Perseus, an Arcane Archer of fine living and constant adventure whose experiences have brought him the knowledge of a great many substances.
+ Fully converts the Drugs found in the Book of Vile Darkness (3.5e version) to 5e, with expanded rammifications due to the Perseus's Guide system for substances being more sophisticated.
- from the publisher's blurb