Known as the temple city, Ayeshastra is perhaps the most vital city to dev civilization for its production of ismat oil. The central and topmost dome of the Ayeshastra temple opens up during the twilight hours every day, revealing the top hexagonal pyramid of a massive rainbow crystal. During this time, temple priests are stationed on a spiral staircase that revolves around the rainbow crystal. They draw the ismat light through the crystal so that it culminates in a thick oil at the base where it is gathered and distributed throughout the dev empire. The oil is a necessary conduit that allows devs to cast grandiose spells. Without it, illusionists can at most project all seven colors of the rainbow. With it, they can manifest detailed images of towers being built. Because the oil is such a cornerstone of dev magic, it is highly guarded at all times, especially when it is being transported. Ayeshastra is also where you will find the greatest dev magicians of Adijari. As the source of Ismat oil, the temple city is dedicated to the teaching and advancing of dev magic.