Howl!
Deacon opened his mouth widely, and channeled Mana to his mouth. As he was using Wind Magic, air gathered in his mouth, forming a sphere of high pressured air.
Once he couldn't increase the pressure of the wind sphere any longer—the moment he couldn't hold the wind sphere anymore—he sent it to the Demons in front of him.
Boom!
The three Middle Class Demons who had been charging at him were blown away by the wind explosion that was so powerful, it carved a meter deep crater on the ground.
The body parts of the blown away Demons scattered around messily, further enraging the rest of the Middle Class Demons. More Demons were coming at Deacon, successfully irking him, but he could do nothing other than facing them.
He had to do that, so Basil could execute his plan successfully. He didn't know what Basil was actually planning, but aiding his Master unquestionably wasn't something out of the ordinary.
Raising his paw, Deacon swung it at the incoming Demons. An extremely sharp wind blade traveled through the air at the Demons with a high speed, bisecting the unlucky Demons that didn't get to dodge it.
Dashing forward, he knocked down a Hobgoblin, and bit its head off. As he noticed there was another Hobgoblin coming from behind, he strongly swung his tail at it, thus throwing said Demon slightly away from him.
Deacon's tail wasn't something he normally used as a weapon, but due to the difference in size, he could knock the three meters tall Hobgoblins down with it. Still though, it didn't give the Hobgoblins a permanent damage or an injury.
Therefore upon knocking down the Hobgoblin who had sneaked behind him, Deacon quickly turned his body around, and charged at said Hobgoblin.
It was already trying to get up from the ground when he arrived in front of it, but he immediately bit its head off, thus ending its life.
Screech!
A strongly ear grating sound that messed with one's mental was heard throughout the battlefield. Three Banshees were opening their mouth widely, screaming loudly at Basil, who had encapsulated himself with wind sphere.
"Banshees are only troublesome when you hear their scream. In other words, only idiots who don't know how sound travels will find them troublesome." Basil scoffed, and charged at them.
Although a Banshee's scream was practically a nightmare to its opponent, it was, after all, delivered physically. Therefore, to annul the damage it brought to one's mind, one only needed to find a way to physically block the sound, not mentally.
Many people were actually already aware of this fact. As they rarely encountered Banshees however, they couldn't react properly when they heard the scream of the Banshee.
In Basil's case, he "deflected" the sound of the scream by creating a wind sphere that protected his entire being from any physical attack. He had practically isolated himself in the wind sphere, but he could still hear the sound of the outside world whenever he wanted to.
Since the effect of the scream of the Banshee was far stronger when they traveled through air, using Wind Magic to block the sound of the scream was the best course of action.
Unfortunately, due to their panic, many people chose to use the wrong Elemental Magic to block it. They treated it just like any other physical attack, so when they heard a Banshee screamed, their distraught mind made a quick, wrong decision instead.
They usually created an earthen wall in front of them to "block" the sound wave that the Banshee was sending at them. Of course, nothing would end well whenever they did that.
Since they could still practically hear the scream, their mind became even more distraught, throwing them into an extremely panicked state, which led to their end.
There were also some people who utilized Earth Magic quite right by making a dome to protect them entirely, but the result was still the same. Sound wave can practically travel through pretty much any media, and the earthen dome they made is one of the perfect media.
Although the people inside the dome didn't hear the sound of the scream as loud as the people outside, they could still hear the sound since the inside of the dome still contained air. It sounded muffled, but the scream could reverberate inside it just fine.
Needless to say, hearing the echo of the scream of the Banshee was no different than a nightmare.
Compared to an earthen dome, a water sphere was better at blocking the sound of the scream. The only downside of using it was the fact that it couldn't be used as an attack.
It was a general knowledge that Water Magic couldn't be used to kill enemies without being paired with another Elemental Magic.
Therefore, to be able to face the Banshees, one had to open a gap in the water sphere that was blocking the scream. In doing so however, one would hear the scream of the Banshee again.
Of course, one could still pair another Elemental Magic with Water Magic so one could still launch an attack at the Banshees without opening a gap in the water sphere.
However, it is worthy to note that unless one was an Elementalist, one couldn't cast any advance Elemental Spell aside from the ones of one's affinity.
In other words, one needed to be a Hydro Mage to face one's opponent of the same caliber with Water Magic. This is why not many people were interested in learning Water Magic.
With that being said, Wind Magic was the best choice to face Banshees—to block the scream of the Banshee. Fire Magic was out of the question, so it wasn't even considered to be a choice in the very first place.
Slash!
Basil cut the head of another Banshee, even before it tried to open its mouth. He had killed 13 of them so far, thus leaving him with only 7 of them to kill.
"All of them are coming at me." Upon looking around, Basil noticed that none of his fellows were fighting a Banshee. They were all either occupied with the rest of the Middle Class Demons or the gigantic Silencer. "Well, I guess I've been marked."
Marking was one of the Demon's ways to set a priority. Due to their animalistic trait, they did it by attaching a certain smell on someone to tell their kin that said individual had to either be killed immediately or belonged to a certain respected Demon and thus forbidden to be touched.
In Basil's case, he had been marked by one of the Banshees he had killed, which made the other Banshees were eager to kick the life out of him. The meaning of the Marking was obvious: 'Kill this individual immediately!'
Funnily enough, even without the Marking, Basil would still remain the main target of the Banshees; he had killed so many of them since the beginning of their clash, he had evoked the anger of every other Banshee.
This is also one of the reasons why none of the Banshees engaged in a battle with the others: none of them had killed any Banshee yet.
SCREECH!
While 5 Banshees were doing their best destroy Basil's mind with their scream, the remaining 2 dashed at Basil with a speed that was equivalent to the top speed of the fastest Peak Stage Yellow Core Knight, which means incredibly fast.
Basil, whose brain had been enhanced upon receiving the Guide, could slowly see the movement of the Banshees, and he was honestly bored with the repetitive action the Banshees did against him.
They were too stupid to realize that he was practically out of their league.
'Guide, how well distributed the Demons throughout the battlefield?'
[Solving the Host's puzzlement...]
[The Demons are distributed evenly through the whole battlefield.]
'So, it's time...'
A session of question and answer between him and the Guide was held in a very brief moment. It was very brief, it didn't even take two seconds.
Upon knowing the tidbit of the information, Basil immediately proceeded his plan to the next stage. Properly utilizing his Qi this time, he meant to finish the Banshees in one go.
Holding his sword horizontally, he infused his Qi into it in a special way. The sword, instead of glowing in dark green light that signified the utilization of Aura, glowed in clear blue light.
Other than his Qi, Basil also poured a part Vagus' soul into it.
[Synchronization]!
The distance between Basil and the two Banshees was no more than three steps. It wouldn't even take them more than a second to reach Basil.
Also at that distance that they lost their capability to move. An overwhelmingly destructive aura was surrounding Basil's entire existence, successfully stunning the Banshees.
His eyes shone in golden light, and a unique circular black pattern could be seen carved on them. His connection with the Fragment was strengthened, and [Eyes of Mana Perception] was activated.
Schwing!
With a swing of his sword, the world seemed to stop for a brief moment. Nothing happened in that brief moment, and everyone was too startled by the overwhelming aura Basil was exuding to move or make a sound.
It was silent, until the nightmare [Synchronization] brought could be witnessed by everyone.
BOOM!
WHOOSH!
They didn't know what was actually happening—whether it was an explosion or a ridiculously strong wind current. However, they could clearly see the brief blue light that swiped over the battlefield before the Demons in front of Basil were reduced to smithereens.
They could clearly see that Basil had sent his attack at the Demons; they, who were fighting away from Basil in the direction behind him, were sure that the frightening attack shouldn't affect them. Still, even the shockwave it produced forced them to struggle in keeping their ground.
On the other hand, Basil, who had killed hundreds of Middle Class Demons with [Synchronization], stared at the wide, deep, long trench he had carved on the ground and the completely blown away Demons in front of him in disinterest.
Turning his gaze to one of the swords Jacinda had given him as the reward for winning the Regional Tournament that he had used to utilize [Synchronization] in his hand, he hummed in interest.
"Unlike before, the sword I have used to utilize [Synchronization] doesn't immediately disintegrate. However still..." Slightly clenching his fist, the sword turned to fine dust. "It doesn't change the fact that it will disintegrate in the end."
The activity in the battlefield was still stopped at this point, as Demons and humans alike were still taking their time to comprehend what had actually happened.
Uncaring to their bewilderment however, Basil instructed Deacon to come over, and hopped on his back.
"We are going to slay that Hog Orc." Basil pointed his finger at the 5 meters tall Hog Orc slightly away in front of him, who was staring at him in excitement. "Once we kill this guy, we will separate ourselves from the others."
Deacon responded by howling, and the battle was resumed at Basil's first clash with the Hog Orc—the current strongest Middle Class Demons in the horde.