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World of Warcraft Item Upgrades Upgrades to an item are a way to increase the stats of an item. Depending on the upgrade type it can boost an item's Mark Level or Rarity and boost additional stats. Upgrading equipment in The War Within requires a certain number of Flightstones and Crests, and each item has an upgrade track. Each upgrade increases the cost of the next one by a specific amount. Item Level The value of an item's stats base increases when it is upgraded. This is the sum of an item's upgraded perks (attack magic attack and defense). Upgr