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The Item Upgrader in World of Warcraft The War Within introduced Valorstones, and Harbinger Crests as two currencies for upgrading gear. These currencies can be traded with the NPCs for upgraders of items Cuzolth and Vaskarn. Each item can be upgraded to the maximum level once for the slot. Upgrades to that slot are then less expensive afterward. Additionally the pity system introduced with The War Within lowers extreme chance of winning upgrades. Upgrades In gaming