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World of Warcraft Item Upgrades Upgrades to items can be used to boost the stats of a particular item. Based on the type of upgrade it can boost an item's Mark Level or Rarity and boost additional stats. The process of upgrading gear in The War Within requires a set number of Flightstones and Crests Each item has an upgrade track. Each upgrade increases the price of the next item by a specific amount. Item Level When an item gets upgraded, its basic stats improve in value. The value is the sum of an item's leveled-up perks (attack magic attack and d