Heading deeper into the Death Magic Formation, the death aura grew denser, to the point where Ruby had to cast an to protect herself.
Ybur was a bit worried: "The death aura here wasn't this thick the last time we came. Has the Negative Energy being suppressed by the Death Magic Formation leaked out?"
Ruby pondered: "Logically, that shouldn't be the case... The essence of the Death Magic Formation is actually a Purification Array. The suppressed Negative Energy is supposed to be slowly channeled and purified. Over time, the death aura should become lighter. Conversely, if the death aura becomes too thick, it should drive the array to speed up and purify the energy quickly... But right now, the death aura has clearly exceeded the threshold. What's going on?"
"Master Zebuzal's doing, maybe..." Ybur speculated.