Ancient Core

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Location and Uses
Ancient cores are a rare drop from Guardians. They can also appear in Treasure Chests found in the overworld, in Ancient Shrines and as amiibo rewards. Link can give them to Purah at the Hateno Ancient Tech Lab to upgrade his Runes. Alternatively, they can be used at the Akkala Ancient Tech Lab as ingredients to create various pieces of Ancient equipment, including the Ancient Set, Ancient Short Sword, Ancient Bladesaw and Ancient Spear. Five Ancient Cores are needed for the third upgrade of each piece of the Ancient Set at a Great Fairy Fountain.