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World of Warcraft - Item Upgrade The upgrade of items allows players to increase the level of weapons and armor that are equippable. This boosts the stats of the item and can also add buffs or rerolls an attach. It is important to remember that while you can upgrade magic and common equipment, it's generally not worth the effort. Rare and unique equipment will quickly surpass upgraded magic and common gear. Cost When a player decides to upgrade an item, they must spend Gold to upgrade