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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 exchanged at the NPCs who s, Cuzolth and Vaskarn. Each item can be upgraded to its maximum level once for the slot. Upgrades to the slot are cheaper following. The pity system, which was introduced in The War Within, also reduces the extreme variance in upgrades. Upgrades Upgrades are elements that boost performance or add new functions. Upgrades can be earned or