Aroon didn't know what to do. The first thing that popped up in his head was to cancel the gear itself and resummon it again.
Large part of the city perimeter was now covered and secured with his trench. Despite that deadly liquid filling it, Aroon knew it wasn't enough.
The area left unsecured by the trench wasn't that vast but it was enough to let in a large number of these deadly serpents. Just like now, almost twenty serpents cut their path towards the city through this area in the past minute alone.
However just before he could move a finger or his mind, the loud and fierce collision between the two sides occured in front of his eyes.
"Zing!"
It was like an arrow piercing through the air, the pillar moving through the ground crushed anything that stood in its path. Aroon stood there in awe while watching the rear army of the serpents getting barbecued by the fierce waves of the deadly liquid.