World of Warcraft Item Upgrades
The upgrade of an item can be used to improve the stats of an item. Based on the type of upgrade, it may increase an item's Rarity or Mark Level, and also boost other stats.
Upgrades to gear in The War Within requires a set number of Flightstones and Crests and each item upgrader has an Upgrade item track. Each upgrade increases the cost of the following one by a specific amount.
Item Level
The value of an item level upgrade's base stats increases when it is upgraded. The value is the sum of all of an item upgrading's leveled-up perks (attack magic attack and defense). Upgrading items can be expensive dependent on the upgrader and the type of upgrade you choose to do. This is due to the sheer number of perks that need to be changed in order to upgrade an item level upgrade.
The level of an item level upgrade is a popular measure of power, and can be found on all tooltips for items. It also serves to limit the amount of PvP gear players can wear since PvP is not available at lower levels.
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