Ice Dragon Bone Knife

A white, rectangular stone floated before the man, surrounded by a faint spiritual energy that made it glow slightly. It looked both cute and powerful at the same time.

"This is a Rune Stone, or what you might call an Array Tablet," the man explained. "Just like the purple papers, this is used to hold Arrays too. But unlike the paper, this can be used over and over again unless it's destroyed. It also comes in grades, from Low Tier to High Tier, and holds the same amount of runes as the paper."

Karsha looked at the tablet in awe. It was magnificent. The energy pulsating from it was incredibly powerful, suggesting that the one floating before him was maybe a Medium or High Tier.

"In arrays, many array masters spend years building complex arrays," the man continued. "Since they can't spend all that time drawing every single rune, they need a medium to store them, and that medium is the Runestone."