Once you accept this quest, Terrorweb Dryders and several Skeletons of Dhuum will immediately spawn nearby to the northeast of the Reaper's location and will head to their targets. There are three waves that each consist of six Terrorweb Dryders and a few skeletons that immediately break up into two equal groups. One group will head towards the Ice King while the other heads toward the Reaper of the Ice Wastes.