Blacksteel

Blacksteel is an incredibly strong metal, only produced by The Rover. When the Humans sailed to Jshang and were taught the ways of steel - they begun doing what they always do, sacrificing the steel to the rover and they got Blacksteel in return. It is incredibly expensive, as it is stronger than any other kind of steel by a large margin. When it was studied by Kley Essence Liquor experts they found it to be Essence Infused but done inhumanly well. Not even capable of being done by the Kley.