When Isiah performs his spell a lot of those mages just fell to the ground without movement, it was a powerful spell and he did it right, the dark magic was toxic to anyone that functions with divine energy .
At that moment Heigl knew that Isiah didn't have the intention to kill them in the first place, because if he wanted to he would have done that .
There were only a few mages that were outside the place who survived that wave of destruction .
Isiah walked toward them right away, they were terrified by his and his new powers, and they were shocked that he was alive, to begin with when the majority of them saw him die that night.
Isiah took one of them after he tied a lot of them with dark robes that absorbed their divine energy until it drained them. That person he took with him was from his district too and Isiah hated him a lot, he remembered him smiling and laughing during the time Rivok was killing him .
