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What is an Item Upgrader? Item upgrader lets players upgrade the level of their equipment. To upgrade items, you'll need the appropriate currencies and items. For weapons and armor, this includes Valorstones and Crests. Other upgrades, such as Hot Potato Books, give weapons an increase in stats or let them be used in Dungeons. These upgrades are usually cash shop items. Leveling Many different sources can be used to improve the quality of equipment. It costs Valorstones and crests to boost the level of an item, based on the kind of item and its upgra