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Items and Upgrade Components in World of Warcraft Upgrades can increase the value of armor and weapons. Upgrades to common and magical equipment are not worthwhile, since rare or exclusive items are likely to outperform them. An item can be upgraded up to six times. Each upgrade will increase the item gauge. Glyphs Glyphs are the upgrade materials that can be used to enhance the quality of an item's features. Glyphs can be used to improve weapons