In Serpent Wild, Hagar Lightninghoof sends you to Whitereach Post to seek advice from Motega Firemane. This is the second quest in the Arikara quest chain, a series of quests involving the serpent Arikara in Thousand Needles. The first quest Alien Egg can be picked up at Freewind Post in Thousand Needles from Hagar Lightninghoof.