Master had just completed his rune diagram when Jack changed places with his copy. The rune diagram shone for a split second before becoming invisible.
From Jack's alarming gaze, Master knew that Euphosine had arrived. He readied himself to activate the diagram's power.
This rune diagram was not one originally within the game system. It was his creation. It was originally designed to extract the divine treasure from inside a player in case that player had fused with the divine treasure. Just like the case with Jack and the Lightning God Blessing.
But after testing it, Master knew that this diagram was not powerful enough to do the job. The fusion was established by the game system. It was not something easily undone.