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World of Warcraft Upgrades Upgrades are parts that can be put into equipment to provide various bonuses. Upgrades can include anything from stat boosts and increased proc probability of amazing effects on equipment to stat boosts. The item upgrade system works a little differently than you may be familiar with 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 the player can upgrade items like weapons, armor and trinkets that are above level 9. These NPCs can be