The Countess' Guide to Beasts and Blights by Stephen Wood is a fun & fabulously illustrated bestiary containing 17 new monsters. Despite the indication by the title, the monsters inside this supplement range widely and include fiends, oozes, humanoids, aberrations, beasts, constructs, undead, and even a small dragon. Each of the 17 monsters comes with great flavor text to inspire adventures and encounters as well as beautifully colored illustrations that encapsulate the vision of the creatures. However, while I think the ecology and information about these creatures is really fun, several of the stat blocks are missing important information, have major errors, and/or have dramatically incorrect CR values. As such, it may be difficult for a DM to run these creatures as-written. The creatures seem to lack traits that are important in their flavor text and, while I normally don't like to critique spelling and grammar, my understanding of the bestiary was impacted by the sheer number of errors. That being said, I think these monsters are a lot of fun and just the flavor text alone really brings them to life.
If you're looking for WotC-standard stat blocks for monsters that you can run without modification or improvisation, this is not the supplement for you. If you're looking for monsters that you can improv easily that have unique traits, features, and background that come with excellent art to inspire your encounters and show your players, you will absolutely get a lot of value from this bestiary!
[3 of 5 Stars!]