Misty Mirror Quartz was a special mineral that was often used in fixed arrays in order to disperse and weaken energies before reflecting it to another point.
It had a foggy appearance but was still able to reflect. Lin Mu had obtained a few long chunks of it from the Desolate Blood Battlefield when he had unearthed the Immortal Stone mines. He had never used them before, so there was a decent quantity of them with him.
~SHUA~
Upon slotting the Arrow tip in, Lin Mu could see a streak of darkness trying to enter the shaft. It reached the first couple centimeters rather easily, but after that it slowed down considerably until halting entirely by the ten centimeter mark.
"Huh… that's a lot better than I thought." Lin Mu said seeing the effects. "And time I can visibly see how the curse spreads too."
He watched it for a few minutes more just to be sure and then picked up the arrow with his armored hand.