This very large monster book is great if you're looking for quirky 3.5 monsters or if you miss some of the odd 1E and 2E monsters. It has a wealth of unusual low-CR monsters for low-level adventures. Also, daemons, demodands, demons, and devils are well-represented. If you want more traditional, hack-and-slash monsters, you might be disappointed. Instead, this book provides strange monsters that can inspire more creative encounters.