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The Item Upgrader in World of Warcraft The War Within introduced two gear upgrade currencies: Valorstones and Harbinger Crests. These currencies can be traded with the NPCs for upgraders of items Cuzolth and Vaskarn. Each item can be upgraded to the highest level for a given slot at a time. After that upgrades to the slot will be less costly. The pity system that was introduced in The War Within, also reduces the extreme variance of upgrades. Upgrades Upgrades are parts th