Find and retrieve Phillip's experiment. To do this, go to ( -206, 32, 57 ) /waypoint -206, 32, 57 and harvest the carcass.
Warning: when you harvest the "experiment" you will be swarmed by 7-10 heroic little spiderlings (approximately lvl 66 vv) if you have not harvested some Creeping Fortune (found near ( -635, 14, 236 ) /waypoint -635, 14, 236). You only need to harvest one and it will put a buff on you that lasts 15 minutes. Quick travel, take the Nightmare mount to the Steamfont Mountain Station