Encouraged by the duration of the Dark World, the three Sons of Heaven launched a series of long-range attacks.
Based on the Son of Heaven's previous behavior, he couldn't see past the magic spells circle into the darkness. Thus, he was in the dark while his enemies knew his position, leaving him only with the option to take a defensive role.
"Barrier!"
The Son of Heaven was now stationary, relying on the transparent barrier to block all incoming attacks.
All magic would automatically fail the moment it came into contact with the barrier. It was truly an ultimate defense. However, the price was the rapid depletion of the Son of Heaven's magic power, due to the tremendous cost of maintaining such a defense.