The act of drawing the Primordial Keepers here deprived them of their weapons and home advantages in the Great Desert, with their Will and Soul flames not having any suppressive effects on Rowan, and with the increasing fatality they were experiencing, the only recourse they had was to go all out.
No matter how much damage they incur if they were to do such a thing, it was still an acceptable outcome because they would slowly recover if they survived, any attempts at holding back would only lead to their extinction.
At the beginning of this fight, the Primordial Keepers quickly understood that soul-based attacks would not work against a soulless abomination like Rowan, and every attack they had been using ever since had been material in nature.
