C873 The Gloomy Heavenly Dao

At the last critical moment, Ling Yifei finally managed to combine the Mysterious Rune and the Thunder Technique.

Boom!

At the moment of fusion, the entire world suddenly changed color. A large amount of dark clouds gathered from all directions, forming a dark area.

Countless lightning bolts as thick as a bowl shot out from the dark clouds. It was as if the wrath of the heavens had descended