My Space-Time System

The fusion spell colonel Darius had used was called extinguisher.

It comprised using his adept mastery over the fire element to extract and compress most of the heat of the flames, thus weakening the flames. Then he used the water element to humidify the burning air before directly quenching the flames with water.

This was was the go-to spell that rendered most fire spells useless and made fire users of even the angel realm dread him.

'That is incredible!' An epiphany dawned on Blake as the system explained Darius' fusion spell.

The concept of fusion magic that had been displayed by professor Gibson was an attacking part of fusion magic, but that seemed to be a small part of it.

The purpose of fusion magic was to combine both elements to create all effects that elements couldn't achieve on their own. It sounded high and mighty but it still followed the same concept of normal magic with imagination being king.

Immediately colonel Darius had extinguished the gigantic fireball, the emperor rank beasts had given their army the order to begin the attack. Hundreds of beasts had begun pouring through the 20-meter wide holes.

The hippodon had aimed 2 of the hydro bombs at the lower parts of the city barrier, while the last one was aimed at the upper part of the city barrier at the same height as the wall. This was the point of entrance for all flying beasts.

On returning to his previous position, colonel Darius saw as the beasts were swarming through the holes and quickly gave the order for the attack to begin.

In an instant, the bottom of the wall was completely lit by the flood of spells fired by the humans and arrays.

At the same time, the aerial beasts coming from the hole at the upper part of the city barrier were making their way towards those on the wall, but the wall's purple barrier that had been deactivated for some time now had suddenly lit up.

With the ferocious speed the beasts were lunging at the humans, the sudden appearance of the purple barrier took a lot of them by surprise. 10's of beasts simultaneously crashed head-first into the barrier, killing some and knocking many unconscious, but that wasn't all.

The moment they came in contact with the wall's barrier they were engulfed by purple that spread to all parts of their bodies and any organic thing that came in contact with them. This made sure that whatever beasts that touched the barrier was as good as dead.

It took only seconds for the army of flying beasts to realize that there was no way for them get through the barrier. So they changed their path of flight and began moving down to attack the humans below.

HUMM! HUMM! HUMM!

The blue orbs of the mini-towers began letting out a low hum as they were powered up.

In a matter of seconds, the hundreds of mini-towers began firing barrages of raw mana at the flying beasts. The main job of the war machines and humans at the top of the wall was to get rid of the flying beasts and make sure nothing takes those at the bottom by surprise.

"I guess that is our cue to start attacking." Blake said to his team as they activated the elemental cannon array. Since they were aiming for speed and lethality, Blake took charge of the array and began lightning spells.

…

At the center of the wall.

Once colonel Darius had given the signal to attack, Oliver and Xavier immediately jump off the wall.

Xavier didn't waste time turning into a bolt of lightning. He instantly covered the 100-meter distance between the wall and the ground, while killing every flying beast that was unfortunate to be his path of descent.

BOOM!

A loud explosion rang out as the lightning bolt crashed into a knight rank greater rhea, killing it on the spot.

Immediately he was back in his human form, Xavier shot out multiple lightning arcs from his fingers killing more than 30 beasts at once and turning their corpses to ashes.

'Show off!' At that time, Oliver had landed on the ground and began walking forward without a care about the hundreds of beasts charging toward him.

Dominance domain!

A yellow hue that spread 20 meters wide appeared around Oliver, and every beast at the elite rank or below, that entered the range of the spell stood still for a second before turning and attacking their fellow beasts.

Oliver had instantly taken over the minds of more than 20 beasts, but more were still charging him. Nonetheless, he wasn't bothered because the dominance domain was still active.

A knight rank cougar among the hordes had noticed this anomaly and had tried to control the rogue beasts, but they had lost the beast tide's connection with them. So the next best thing was to take out the threat.

Using the connection of the beast tide, the knight rank cougar alerted 4 knight rank beasts close by, causing 5 of them to attack at once.

Just like they had expected, entering the dominance domain had no effect on them, but they soon noticed an evil grin on the face of the human.

Soul Indoctrination!

5 wisps of light that contained his life force shot out of Oliver's stout body and merged with the yellow hue of the dominance domain and traveled to the knight rank beasts undetected.

Once the wisps of light came in contact with the knight rank beasts, their souls were instantly brainwashed and a soul connection with their new master was created.

Just like the elite rank beasts, the 5 knight tank beasts turned around and began slaughtering their fellow beasts.

Compared to Xavier's arrival, that of Oliver was nowhere near flashy but his involvement was the most felt by the humans behind him.

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Check out 3_Sins_Studios works: Deviants and Reborn in a Magical World: From Cultivator to Mage.

The account is a group work from me and two other authors. Hope you like it.