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Item Upgrading and Rerolling in World of Warcraft Upgrades can be made to items to improve their performance. Upgrades are crucial for gear, particularly in the early stages of the game. Upgrade your BiS (Best in Slot) items first, then move on to other pieces of gear that will fit your build. The process of upgrading an item is accomplished by spending Upgrade Tokens on the upgrade window of an item. The amount of slots for upgrading varies by item type. Upgrade component