In the Royal Canterlot Archives, every scrap of Equestrian history is recorded, often with artifacts present as evidence. There are grimoirs and cookbooks, and there are swords and ploughshares. Many items are harmless (provided one is not allergic to dust mites), but those that are remain under lock and key. The first diarchy saw the creation of masterworks of stone, steel, and magic. The Royal Everfree Archaeologists unearthed countless powerful sources of magic from ages past. Some magic is older still.