The Frostbitten and Bloody Rare WoW achievements require you to hunt down every rare spawn in Northrend and Outland respectively. While these are definitely time consuming achievements to obtain, there are add-ons that make the process of rare mob hunting a lot easier. In addition to earning achievements, farming rare mobs also rewards you with plenty of gold, blue items, and other loot. Each Northrend rare mob drops an entire stack of Frostweave cloth! Here’s how you can find these rare mobs, for fun and profit.