Sinuous, powerful, and mysterious, Nagas are a diverse class of magic-wielding reptilians that might be highly intelligent or nearly bestial, good or evil, and monstrously huge or merely man-sized."Bestiarum Vocabulum: Nagas & Magics" includes detailed entries for a dozen very different sorts of Nagas, along with colorful new spells and a variety of magic items related to these strange and compelling creatures. 

Nagas may have been divinely molded for a specific purpose, or might simply be members of the larger monster community. Indeed, no single history speaks to all of the various species. Some mythologies describe Nagas as guardians the gods created from whole cloth to perform specific tasks, or to bring suffering or succor to mortals. Other peoples believe themselves descended from the reptiles and worship them as holy ancestors. 

Whether divinity or evolution defines your setting’s Nagas, these creatures can make powerful allies or dreadful enemies for your player characters.