The killer move star cast might be incredibly powerful and would affect the balance of all five regions, but any killer move had its weaknesses and flaws.
Fang Yuan did not know much about star cast, but he knew one crucial point.
Star cast needed a tracer.
This tracer was the harmful dao marks that Feng Jiu Ge left behind the previous time he invaded Lang Ya blessed land.
In the previous life, these harmful dao marks turned into a dark spiral that transported Chen Yi, Thunder Ghost True Monarch, Feng Jiu Ge, and Fairy Zi Wei in.
Luckily, Fang Yuan and Lang Ya land spirit reacted quickly and destroyed the dark spiral in time, they prevented even more Heavenly Court Gu Immortals from entering.
This time, because of rebirth, Fang Yuan knew the exact location of the dark spiral.
Thus, he modified Lang Ya blessed land's defensive formation actively and covered it using the formation space.