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Item Upgrading and Rerolling in World of Warcraft Upgrades can be made to items to improve their performance. Upgrades are important for equipment, especially in the beginning of the game. Begin by upgrading BiS (Best-in-Slot) items, then work on other equipment pieces that will fit your game plan. Item upgrading is done by spending Upgrade Tokens on the upgrade window of an item. The number of upgrade slots varies according to the type of item. Upgrade components Upgrade components are items tha