The Two Headed Dragon of the 62nd Devil God inhaled greatly using both of its heads. A few seconds later, a torrent of poison fog and hellfire engulfed the area in front of it. Half of the marshlands became poisonous swamps while half of the sea area became a sea of fire.
If a player told people that they saw the sea burning, then they would not have believed them but the scene being shared in the screen just threw common sense out of the window. Coastal area and half of the sea is burning in a blazing inferno.
The monsters that scattered about all died when they got hit by the poisonous fumes and hellfire. It is not only the monsters that died as the players that did not have time to evade or escape also died. With just one breath attack, the Two Headed Dragon of the 62nd Devil God changed the terrain.