The moment Yun Feng's finger touched the black formation flag, he felt a wave of icy-cold energy invading his palm.
Given Yun Feng's cultivation realm, he naturally wouldn't be harmed physically by such a set of formation artifacts, but the sheer level of malevolent corruption in the item truly surprised him.
"Human bones for the shafts, human hair woven into the banner, human skulls polished into the tips, human skin wrapped around the grips, human blood used to temper and refine them."
Chapter 546