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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. They can be exchanged at the NPCs who upgrade items, Cuzolth and Vaskarn. Each item may be upgraded up to its maximum level only once for a slot. to that slot are then cheaper afterward. The pity system that was introduced with The War Within, also lowers the extreme upgrade variance. Upgrades Upgrades are elements that boost performance or add new functio