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World of Warcraft Upgrades and Item Upgrading Upgrades can boost the value of armors, weapons and rings. Upgrades also boost bonuses like Crit chance and damage from PvE. If the weapon's upgrade template is in %, the weapon will gain 3percent of its previous damage for every time it's upgraded. The cost of upgrading an item is determined by the item's level. The cost rises with item's level. Components Upgrade components can be incorporated into weapons, armor and trinkets in order to provide them with a b