Only those with excessive soul trace than ordinary people were able to become Array Masters.
As for the formations which were commanded by practitioners, it was the most esteemed and most difficult portion of array skills.
Because based on the formation arranged by the array patterns and magical beast cores, the flow of energy within was stable. As long as it had been calculated beforehand, one would be able to control it with precision.
But humans were different.
There was no way to predict the amount of ability displayed by every single practitioner in the formations which were grouped based on humans, and the fluctuations that might be given out with each attack.
As a Commanding Officer, one had to acutely detect the variations within and adjust them accordingly based on the actual situation.
Moreover, during the battle, the opponent's situation was also ever-changing. So there was no way to predict it in advance.
