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World of Warcraft Upgrades Upgrades are parts that can be added to equipment to provide various bonuses. They can range from stat boosts to increased proc odds of amazing effects on the equipment. The upgrade system for items works slightly differently than what you may be used to from other MMORPGs. This guide will go over the basics of the system and give some suggestions and tricks. Rerolling When visiting an upgrader for items, a player can upgrade items like trinkets, weapons, and armor that are above the le