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The Item Upgrader in World of Warcraft The War Within introduced two gear upgrade currencies: Valorstones and Harbinger Crests. They can be traded at the item upgraders NPCs Cuzolth and Vaskarn. Each item can be upgraded to the highest level for a particular slot at a time. Upgrades to that slot will be less expensive afterward. The pity system, introduced with The War Within, also lowers the extreme upgrade variance. Upgrades Upgrades are components that improve performance or add new functionality. Upgrades can be earned or purchased in a va