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World of Warcraft Upgrades and Item Upgrading Upgrades can increase the value of weapons, armors and rings. They also increase bonuses, such as crit chance and PvE damage. For instance an item with the upgrade template ending in % will gain 3damage to attack each time it is upgraded (relative to its previous value). The cost of upgrading an item is determined by the item's level. The cost increases as the item's level increases. Components Upgrade components can be added to weapons, armor and trinkets in order to give them a stat boost or to add an a