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What is an Item Upgrader? Item upgrader allows players to improve the quality of their gear. To upgrade items, you'll need the appropriate currencies and items. This includes Valorstones, the crests and armors for armor and weapons. Other upgrades, such as Hot Potato Books, give weapons a stat boost or allow them to be used in dungeons. These upgrades are usually items in the cash shop. Leveling An upgrader for items allows players to improve the level of equipment from various sources. It costs