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What is an Item Upgrader? The item upgrader allows players the ability to upgrade their equipment. To upgrade items, you'll need the appropriate currencies and items. This includes Valorstones, crests and armor for armor and weapons. Other upgrades, like Hot Potato Books, give weapons an increase in stats or let them be used in dungeons. These upgrades are usually purchased from the cash store. Leveling A number of different sources can be used to upgrade the equipment's level. It costs Valorstones and crests