Akhilleus Kosmos: The Miniature World Enclosed by the Azure Sky (蒼天囲みし小世界アキレウス・コスモス, Sōten Kakomishi Shō SekaiAkireusu Kosumosu?) is the shield of Achilles, a Divine Construct forged by the Greek smithing god Hephaestus. It is a defensive type, Bounded Field Noble Phantasm comparable to Rho Aias, said to be able to stand against nearly any attack by deploying a miniature world. Described within a hundred lines of text in Book 18 of the Iliad, it is the world Achilles lived in reproduced by Hephaestus into a miniature form in the shield, featuring swirling ocean currents on the outer circumference due to the sea god. It is said that "to oppose this shield is the same as making the world your opponent", allowing it to protect against Anti-Unit, Anti-Army, Anti-Fortress, Anti-Country, and An