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Item Upgrading in World of Warcraft It is possible to boost the stats of your equipment by upgrading it. Certain upgrades can enhance the appearance of your equipment. Upgrades allow reroll affixes to be added, and add additional stats. If the item that was upgraded had Enhanced Defense, its Enhanced Defense stat will increase to maximum +1. Otherwise its Enhanced Defense will roll a new value. Leveling Leveling is the method of measuring and determining the relative height of points to the level of a refe