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World of Warcraft - Item Upgrade The item upgrade feature allows players to boost the item level of equippable weapons or armor. This improves the effectiveness of the equipment, in addition to sometimes adding buffs or rolling an affix again. It is important to keep in mind that although you can upgrade magic and common equipment, it's usually not worth the effort. Rare and exclusive gear will quickly outclass modernized magic and common equipment. Cost The player must pay gold to upgrade an item.