Overwhelming Power!
Nial and Mathias had fought together very often. Their teamwork might not be perfect, but it was very good.
Mathias knew that Nial wanted to take one opponent at a time which was why he created a gap within one of the frontal Earthen walls.
Through this, Nial appeared in front of Tessa, who had been forced to stop so that she wouldn't run straight into the thick Earthen wall.
While facing Tessa, Nial merged his dark energy with the black miasma before he continued to release it.
Simultaneously, he released the merged dark miasma into the ground, dying it pitch-black.
Nial released his pseudo-domain slowly and steadily. As the surrounding was shrouded in darkness, it was impossible for anyone to notice that the ground was dyed in pitch-black ink.
Even the Earthen walls created by Mathias were slowly taking on a dark black color. However, it possessed far less mana than the dark miasma Nial released.