Corsasteel: a metal of major advancements and powerful integrity. An alloy of over a hundred different metals and chemicals with a strength that rivals everything else we have. Its melting point is so far in the extremes that tungsten will seem like cold ice.

What uses corsasteel? Monsters of the other side are clad in corsasteel, standing only beatable to each other. Don't worry, they are kept at bay, we'll never see them in our side of the 3.1 dimensional plane.