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World of Warcraft Item Upgrade and Set Bonuses The item upgrade is an enchantment which increases the base stats of specific armor or weapons. This includes secondary stats like Leech and Speed. A special evolution item which allows Porygon2 to evolve into the game Porygon2. It can be 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 The upgrade system let