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World of Warcraft Item Upgrades Upgrades to items can be used to improve the stats of a particular item. Depending on the type of upgrade you choose, it can boost the rarity of an item or mark Level and increase other stats. Upgrades to gear in The War Within requires a specified number of Flightstones and Crests, and each item has an upgrade track. Each upgrade increases the cost of the following one by a certain amount. Item Level When an item is upgraded, its stats increase in value. This is the sum of all the u