The Nagah are cool. Everyone likes the idea of Assassins, and the snake is the coolest animal to do the job. They are probubly one of the most complex group of shifters as well. People believe that they are extinct, but they still conduct their duties.
See, the Nagah have the job of playing the judge (the every supernatural group in a White-Wolf game has). They are basically a group that hunts down offending shapeshifters and plays judge, jury and exicutioner. Of course, due to past circumstances this can only be done by a group of Nagah, and as such they travel in groups of three.
Rules wise these guys are monsters. They have Venom which essentially makes them killers without anything else, as even one bite of the venom, could kill any person who can't soak aggravated damage. They are also adept at being sneaky and have numerous gifts to hide their passing. These guys would seem perfect for powergamming but ironically, they are rather limited in fighting purpose. This book is a rather good book for a person who really wants to spice up their Werewolf game.