Elemental Compendium II

From the introduction: The Inner Planes are the realms of raw substance, where the physical traits of all the multiverse are established and defined. The most common residents of the planes are the pureblood elementals, those creatures made of raw elemental substance given sentience. However, over countless eons, a multitude of creatures have developed from the stuff of the Inner Planes, dangerous creatures of strange power and stranger motivation.