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Item Upgrading and Rerolling in World of Warcraft Upgrades can be added to items to increase their stats. Upgrades are essential for gear, particularly in the beginning of the game. Upgrade your BiS (Best in Slot) items first, then proceed to other items that are compatible with your style. Upgrades to items are made by using Upgrade Tokens to fund an item's upgrade window. The number of upgrade slots varies according to the type of item. Upgrade components Upgrade components are unique items which can be added to armors, weapons, trinkets, and gath