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The Importance of Upgrades in World of Warcraft Upgrades are a brand new type of item that gives an increase in your stats. These can be used to upgrade your armor, trinkets and weapons. To calculate probabilities, upgrades employ a "upgrade pity". This system is designed to minimize extremes of chance and provide a safety net when you upgrade. Armor The item upgrader allows players the possibility to upgrade the level of equipment of their weapons,