Chapter 519: The Dragon's Reverse Scale, Eryx Aitken's Speculation!

In the palm of Eryx Aitken's hand lay a black dragon scale. It was as dark as ink, resembling obsidian, yet it was translucent and interwoven with tiny runes that shimmered brilliantly, exuding an ancient and mysterious aura. Most importantly, the scale exuded a pure dragon might, radiating an immortal luster. Eryx immediately recognized it as the reverse scale of a dragon—known to be the hardest of all dragon scales. "Legend has it that the Black Heaven Demon Emperor is a black dragon. Could...