A Demon Core is an energy crystal capable of boosting skill levels and item quality.
Holding the black crystal in his hand, Yan Ao felt a stream of information surface in his mind.
According to Xie Renjie, this item functioned just like Sublimation Crystals and Blood Soul Stones. Under normal circumstances, they only had a certain chance of dropping when special monsters appearing in a Death Game were killed under the intervention of a Death Option.
Chapter 87