Chapter 813: The Potential of the Immortal Emperor

The figure bathed in countless thunderbolts descended with an overwhelming might that reached its peak. As a strike was delivered once again, the entire starry sky was covered by the crackling ocean of thunder and lightning.

The Green-robed Immortal King and the other two Immortal Kings' complexions turned to dread as they hurriedly used their signature abilities, each fighting against the all-encompassing Thunder Sea falling from the sky.

But how could they easily contend with such an omnipotent force between heaven and earth, a force both supremely yang and supremely hard? Moreover, this was not the power of ordinary thunder and lightning.

Even if the three Dark Immortal Kings exhausted all methods, their flesh could not withstand the ultimate strength of heaven and earth. The vast thunder seemed like countless sharp blades, slicing their bodies to pieces.