There was a round disk located at the 'neck' of the castle, which was divided into a black side and a white side. Flickers of terrifying lightning could be seen gathering around that location. According to the castle's original configuration and power, it was capable of shooting out two bolts of thunder simultaneously, each one carrying a tremendous amount of power. In order to simplify the controls, Ji Ning had made it so that just a single bolt of thunder could be unleashed. However, this had the beneficial side effect of reducing energy costs by 50%. Attacks of such power consumed enormous amounts of energy, after all.
"That looks absolutely terrifying. I can sense that the power of that thunder is more than enough to wipe me out," Azurefiend said with a sense of lingering fear.
"You? Even I would find it hard to survive." Patriarch Treewind felt fear as well, as did Imperator Jade Rainbow and the others.