"Increase the sonic output. Use sonic attacks!" Ye Luo immediately gave the order after the Two-Winged Bat Demons came under attack.
All the Bat Demons in the front ranks immediately opened their mouths wide, and rings of terrifying sonic ripples spread outward. Unlike the ultrasound from before, which was meant for detection and had little power of its own, these spreading sound waves carried the full-force strike of a Tier 22 expert.
Moreover, the sound waves spread outward in a fan shape. After traveling a hundred meters, the rings of sound had merged together, raising their attack power to the level of a Tier 24 expert.
The Elf warriors' arrows came flying like rain, but they could no longer achieve their previous brilliant results. Arrows gleaming with green energy were shattered by the terrifying sound waves the moment they came within five hundred meters of the Two-Winged Bat Demons. The occasional arrow that passed through the sonic defense and struck a Two-Winged Bat Demon could barely kill one. Such powerful arrows could only be fired by renowned experts of the Elf Race.
The sound waves had already formed a terrifying energy shield before the Two-Winged Bat Demons. If not for the black mist greatly weakening the sound waves, causing them to consume more energy and lose power the farther they advanced, then the Two-Winged Bat Demons could have reached the enemy's front lines with sonic energy that was both offensive and defensive.
Once the arrow rain proved almost entirely ineffective, the Elf warriors finally stopped their futile attacks. However, as a quasi-Level 7 civilization, they were not so lacking in methods that they only had warriors to attack with.
"Whoosh, whoosh, whoosh..."
All of a sudden, the black mist trembled, as though a terrifying Star Sea Behemoth were rapidly closing