"This is rather tough, I feel like we're trying to punch above our weight class" amidst a group of mask-wearing death hunters, all of them dressed in white, impersonal practical clothing, the one speaking was crouching down, bringing up the fact that their current attempt to clear out the rot wasn't very successful.
As had been demonstrated by Marlene and her group, the regular flames weren't going to cut it, the first idea was to bring in an experience pyromancer, they would keep control of their flames and continue injecting mana into the spell to prevent it from being put out, however, even that proved unfruitful, the amount of black blood the rot could ooze was simply obscene.
The strain of keeping the flames going was beyond expectations, and not efficient enough to burn through the blood and flesh anyways, bringing in more pyromancers and having them work together was then hatched, much similar results occurred, even if they advanced on the rot, there was simply too much.