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World of Warcraft Item Upgrade and Set Bonuses The upgrade to an item is a kind of enchantment that improves the stats of specific weapons or armor. This includes tertiary stats like Leech or Speed. A special item of evolution that allows Porygon2 to evolve into Porygon2. It is found at Pokestops and Gyms. Universal upgrades can be used on any type of equipment and offer fewer benefits than other components that are equipment-type specific. Leveling Upgrades allow players to upgrade their items by incre