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World of Warcraft Upgrades and Item Upgrading Upgrades can increase the value of armors, weapons and rings. Upgrades also boost bonuses like Crit chance and damage from PvE. For example a weapon that has the upgrade template that is ending in % will take on an attack damage of 3% each time it upgrades (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, ar