Demon Lord's Reincarnation

Once the battle started a lot of spells were launched from Evior's side. Almost all the students on Evior's side fired random spells towards Kretos. On the other hand, the guards who were paid to protect Evior didn't fire their spells as they tried observing what Kretos would do facing a bunch of low-tier to mid-tier spells. 

Unfortunately, the students had no battle experience, nor did they have good cooperation skills. Some of them canceled one another spells as they collided mid-air. Still, even though some of the spells didn't make it to Kretos, a majority of them were able to reach him. 

Kretos looked at the poorly initiated spells and felt greatly disappointed. When he heard some of them chanting, he could understand that some of them were actually chanting mid-tier spells. He was starting to feel a bit of hope that maybe these students weren't as bad as he thought. But when he saw the execution of the spells, as well as the mana distribution, he couldn't help but sigh as they were all messy, so the output wasn't even close to mid-tier. 

Though the spells were meant to be mid-tier the way they were used, has made them only slightly better than low-tier spells. Also, the spells were all over the place. The whole performance was idiotic in Kretos's view. 

On the other hand, the students watching the battle were amazed by how many spells were being used at the same time. They started thinking that it might actually be a bit more fun to be a combat mage. 

The referee was about ready to claim the battle over when he saw the spells about to hit Kretos. Even a high-level mage like himself would find it difficult to block all those attacks. Especially if the mage in question wasn't even chanting a counter. Instead, Kretos was just standing there yawning, as if he wanted to die. 

As the spells hit Kretos a large explosion occurred, the dust from the explosion scattered everywhere, and the magical barrier surrounding the field was hit. It was a good thing that the barrier was working properly since if one of the students was hit by a stray spell they could've died. 

"The win-" The referee was about to announce Evior's team as the victors, but then he sensed a weird mana fluctuation in the dust storm. He looked as the dust scatter away and within it revealed a completely unharmed Kretos. 

Everyone was shocked to see him without a single scratch. Aside from his spot, everything else within a twenty-meter radius from him was blown away. It was pretty obvious he didn't move from his spot.

The students watching couldn't understand what happened, neither did the referee. How was Kretos able to survive that barrage without chanting? The referee then remembered the weird mana fluctuation he felt moments ago. Was Kretos able to use a spell without chanting?

Though everyone was shocked, the most shocked by the events were the students that fired the spells. Evior once again felt fearful as the guards he hired tightened their formation. 

"Is that it?" When Evior heard Kretos's condescending remark, his anger overcame his fear as he shouted. "KILL HIM! Hit him with everything you got." 

The students once again started chanting, but this time the guards also joined in. The students once again released a barrage of spells. Once those hit Kretos, the guards also released their combined spell. 

It was their specialized combined spell, [Flame Snake]. A giant snake-shaped flame appeared and wrapped around the area were Kretos stood. The heat coming from the [Flame Snake] was so intense that even though the outer area were the students sat was protected by a magical barrier. The intense heat was able to melt a bit of the stands barrier and all. The students who were watching backed away as they too felt the intense heat. 

The referee saw that some students on Evior's side were dying due to the heat produced by the semi high-tier spell. Even he was forced to use multiple layers of ice spells to protect himself from the heat. Surely this time Kretos was dead. Even if he had the most powerful barrier being so close to such intense flames, would burn even his soul away. 

As the guards poured a large amount of mana into the [Flame Snake], they thought it was finally over. They were about to release their spell when they noticed something odd with the [Flame Snake]. Their spell was actually quivering, it was then the heat changed into an intense frigid atmosphere.

The powerful [Flame Snake] was being frozen over. Once its whole body froze, it broke into tiny millions of pieces and from there they once again saw Kretos unharmed. 

"Is that it?" The moment everyone heard the same question being asked, they felt a shiver on their spine. This new student was unbelievably powerful. Seeing this performance the referee knew that even he wasn't a match for Kretos. 

The guards had underestimated Kretos's power and advised Evior to surrender. But unfortunately, the young mage wasn't listening as anger filled his mind. The remaining students participating in the battle had all surrendered which made Evior even more furious. 

On the other hand, the guards couldn't do the same, as long as their employer told them to fight they needed to fight. They were bound by a contract that would kill them if they disobeyed. So either they die by breaking the contract or they die at Kretos's hands.

"KILL HIM! ATTACK HIM, AND KILL THOSE TRAITORS AS WELL!" Evior commanded the guards. Despite wanting to attack once more, the guards noticed that they couldn't move their bodies. 

It was a rather weird sensation as they weren't paralyzed by any potion or spell. When they saw the bored Kretos looking at them, they finally realized what had happened to them. They were struck with fear, the fear they felt of the unknown being before them. Still, unaware of what was happening to his guards Evior continued to bark his orders. Kretos, on the other hand, had lost all interest in this supposed battle. 

"I see... That's all you got, really what an utter disappointment. Allow me to show you fools what a real spell looks like... Since you fools used a fire spell, I will use an ice spell to finish you off." Kretos started to gather mana into his fingertips and drew a magic circle in the air. The formula used to create the magic circle was so complex that none of those present could understand it. Still, it caught the interest of all the students watching as well as the referee. They all tried to memorize and write down the formula used to create the spell so that they could research it later. 

Once Kretos was done with creating his magic circle, Evior finally understood what was happening. He wanted to surrender but the immense amount of mana coming from the spell was suffocating him. He couldn't breathe much less talk. By instinct, the referee and the students also understood what was about to happen so they all fled from the arena. 

"This was a bore." After Kretos said those words at Evior, he activated his spell. "[Absolute zero]." In an instant, the whole field turned into a field of ice. Everything was turned into ice sculptures. The look of horror in Evior and his guards' faces got stuck as they turned into ice. 

Kretos then extended his hand outward and clenched it as he activated another spell, "[Break]." The bodies that were frozen started breaking, and then they exploded into tiny shards. The only person aside from Kretos to witness this scene was Afeus. He was at the edge of the arena and covered himself in multiple defensive barriers. He looked at Kretos with eyes filled with crazed admiration.