Dragonsteel

A metallic silver substance that forms ridges and outlines on Xisis's otherwise onyx hide — running down his six limbs and the sides of his neck, forming two burnished horns and a line of spikes down his back. The narrator speculates that the legend of dragons hoarding wealth may have been seeded by the otherworldly metal left behind on their corpses. Firelight reflecting off it makes it look like liquid metal as the dragon moves. STD:Tress:Ch 50