Serpent Kingdoms

Serpent Kingdoms is a sourcebook set in the Forgotten Realms using the 3.5-edition ruleset of Dungeons & Dragons. It details the various scaled races of Faerûn.

Blurb
"Chilling fireside tales describe the fell plans and foul actions of the horrors known as the Scaled Ones: lizardfolk, nagas, yuan-ti, and their sinister creator race, the sarrukh. Infinitely patient and ruthless, the insidious serpentfolk seek to enslave all of Faerûn's other races to breed them like cattle. For those bold enough to peer within, Serpent Kingdoms offers an unsettlingly detailed look at the malevolent serpentfolk and lizard races of the Forgotten Realms game setting.

Included in Serpent Kingdoms:
 * 27 new monsters
 * 27 new feats
 * Dozens of serpentfolk sites"