It spawns in the center of the pond by the slaver caves, PH is an alligator. Not too hard to find with track since its the only one in the zone. Pretty rare spawn that is on a 1/2 hour timer.
Drops glowing reis pieces, http://lucy.allakhazam.com/item.html?id=62943 and a plate class shoulder called Dreadscale Pauldrons which isn't showing up on lucy