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The Item Upgrader in World of Warcraft The War Within introduced Valorstones, and Harbinger Crests as two currencies for upgrading equipment. They can be exchanged at the NPCs for upgrading items, Cuzolth and Vaskarn. Each item can be upgraded up to its maximum level once for a slot. After that, upgrades to that slot will be cheaper. The pity system, which was introduced in The War Within, also reduces the extreme variance of upgrades. Upgrades In gaming upgrades are components that increase pe