World of Warcraft Upgrade Item Guide The Upgrade item is an evolution item that trainers can use to evolve Porygon into Porygon2. This evolution requires an upgrade, a Sinnoh Stone and 50 Porygon Candy. The introduction paragraph is an essential element of any essay. It introduces the topic, question or issue that your essay will address and explains your viewpoint. Upgrade components Upgrade components are items that can be inserted into weapons, armor
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