'Turbid Wind'
Facing the onslaught of giant bugs, Ivan casually took out a potion. Within the potion, a sticky substance as black as cotton floated about, which was, indeed, the manifestation of the Black Magic Wind he had refined.
He blew lightly towards the mouth of the bottle, and the wind-floss drifted out of the potion bottle, forming strands of breeze tinged with black light.
The breeze created blew forward, and each strand swept precisely over a giant bug. Some of the bugs were charging towards him, while others were still expanding and transforming.
Struck by the black breeze, all the giant bugs' movements seemed to freeze at that moment, as if they were petrified.
Wherever the Turbid Wind passed, it left a sensation as if all things were being obliterated.
In reality, Ivan was merely exploiting the special effect of the Black Magic Wind to bully these giant bugs with weak willpower, causing them maiming or even death.