Saleen experimented a few times and discovered that there were no reactions to the bond between the Three Kings and him. He knew that the constraints of this bond were beginning to loosen. If the Three Kings colluded with others against him, he would not be able to sense it. Saleen was finally determined to eliminate the Three Kings.
It was not easy to take advantage of the rules, they could only use those that were already in their grasp. After being controlled by himself and Aini for such a long time, it was about time the Three Kings would try to break free. They were so strong that if Saleen had been in the death dimension, he would have been killed by Three Kings easily.
The battle was also something Saleen needed to worry about. Many buildings were being constructed east of the temple. These buildings would be used temporarily for Saleen to create equipment.