From the publisher's website: "Malevolent and Benign is a brand new 128 page, 1e monster book featuring 150 creatures (and more than 85 illustrations) compatible with the first edition of the world's most popular fantasy roleplaying game. Confront the most experienced player with unfamiliar monsters such as the fearsome fungal render, the vicious hellscorn and the terrible herald of armageddon. Includes 4 appedices: new magic items associated with the monsters, monsters by level, monsters by rarity, and monsters by terrain type."