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The Item Upgrader in World of Warcraft The War Within introduced Valorstones, and Harbinger Crests as two currencies to upgrade equipment. These currencies can be traded with the NPCs for upgraders of items Cuzolth and Vaskarn. Each item can be upgraded to its highest level for a given slot at a time. Upgrades to that slot are then cheaper afterward. The pity system that was introduced in The War Within, also reduces the extreme variance of upgrades. Upgrades In gaming, upgra