Alex's body was wracked in pain as he rolled on the ground but he got up quickly and healed his body while also healing Neon's body.
"Divine Blessing."
Neon felt his strength rising and his body seemed to be full of vigour.
"Professor, let's cast the dual spell," Alex suggested while casting a light barrier around them through which Neon continued to cast spells.
Neon was at a loss for words after hearing Alex's suggestion.
For dual spells, both the user should be compatible with each other and the difference in the realm shouldn't be great otherwise if the spell became unstable it may explode harming the caster.
"I can take the burden. Let's not waste time on useless thoughts." Alex pleaded.
"But what spell do you want to try?" Neon asked.
"Let's mould fire and ice spell."
"What!!" Neon almost screamed and stared at Alex in shock.
Mixing two elements of opposite nature was quite suicidal.
The Death Knight was already on their tail.
Neon and Alex backed away from his assault and both of them flew up into the sky.
Neon knew that Alex was quite capable but honestly he was a bit afraid of Alex's suggestion.
He was saving his ultimate attack for Lich that's why he was trying to kill the death knight by saving mana and Alex's suggestion had given him a way to take down Death Knight without wasting all its mana.
Alex also had the same thoughts. After finishing things here, he needed to do some other things so he cannot afford to heal Neon fully and recharge his mana to peak nor can he spare so much of his energy here.
"Okay, let's do it."
Neon muttered, closing his eyes, and starting to cast a spell while trying to match Alex.
Alex raised his hand and tried to match Neon's tempo.
Alex knew that merging spells wasn't easy but for an experienced caster like him, this was nothing.
He tried to merge the spell with Neon.
Alex cast an ice spell while Neon cast a fire spell.
At first, both of the spells tried to compete with each other but under Alex's mastery, it started to blend.
White light illuminated and a fiery sphere was formed with an icy interior.
The Death Knight noticed the mana fluctuations and raised his chin slightly.
The greenish flames in its hollow socket flickered. It was a high-level undead and it was a bit sensitive and had some intelligence compared to other undead.
It raised its sword which was covered with a blackish aura to slash above.
"Flames Of Ice."
Both Neon and Alex shouted.
A huge sphere appeared with contrasting energy that was shot at the Death Knight.
A blackish blade ascended and collided with the sphere but it was overwhelmed thoroughly and clashed with Death Knight.
WHOOSH!
A pillar of flames rose from the ground which erupted into waves of flames on the ground.
The darkness covering the place was momentarily eroded by the attack.
BOOOM!
The undead nearby collapsed and burnt into ashes and as the flames expanded, much to everyone's surprise, it was extinguished and the flames were frozen.
The epicentre of the attack was also frozen along with the pillar along with Death Knight.
A small red tint could be seen inside the glacier of ice which started to enlarge followed by a thundering eruption.
BOOOOOOOM!
The ground shook and trembled.
Even Celestine who was battling with another Death Knight was baffled by the spontaneous blast which shook the place.
The explosion swept away the place converting the entire vegetation into barren land.
Neon almost jumped gleefully.
"We did it." Neon spoke with gratitude but frowned on getting no reply.
He looked around to see that Alex had already escaped out of thin air and a small voice lingered.
"My work is done, I am going back."
"Huhh!" Neon was confused by Alex's voice but the confusion turned into shock when he felt a strong fluctuation.
His eyes widened when he stared at the back to see something coming towards them leaving behind a trail of light.
"Is it reinforcements!"
Swish!
A rustling sound echoed and everyone noticed a trail of fire moving ahead tearing the air before it just like a meteorite.
An arrow splitting heaven and earth descended from the sky aiming straight at the Lich.
The Lich was startled by the sudden attack that appeared out of nowhere and tried to defend themselves but it was too late and the strength imbued in the attack was too much for it.
The arrow collided against him directly and swept him away leaving behind nothing.
Another explosion shuddered the place leaving behind a huge crater of nothingness.
Celestine who finished off the Death Knight glanced at the figure of the man that appeared.
"Commander Zach!"
Their commander was a Mythic rank Archer and many even referred to him as Godly Archer in the stronghold.
Although, it was a bit exaggerated and there were many archers better than him but their Commander skills weren't worse compared to others.
Killing a legendary rank Lich in one shot. Only their commander could do something like this.
After Zach's arrival, the reinforcements arrived riding on a tamed beast and killing their way.
Without the Lich, the stronger undead surrounding them ceases to exist leaving behind minor ones who were taken care of quite easily.
Neon was the first to show up before Zach but his eyes didn't reflect gratitude.
"Commander Zach, thank you for saving us from the current predicament but let me ask you something."
"How can you not report to us that this region is filled with the undead? This place is too dangerous for the students to take a test."
Zach heard Neon's words filled with grievousness and frowned.
"I have sent a messenger that something odd was happening around here and we have spotted a few undead here. The situation wasn't that worse which is why I left the decision to the academy but who knows so many undead would rise and attack today."
Neon's expression was distorted and he asked in a panicked tone"What do you mean, you sent a messenger? We didn't get any?"
"Did someone intercept it?"
Zach and Neon spoke simultaneously.
Beads of sweat formed on their forehead.
"We need to get the students out of here immediately." Neon muttered.
"First let's get them to the stronghold," Zach advised.
....
The order to retreat was announced shortly.
First, the students who were present would be evacuated quickly while the troops would search for the remaining ones.
There were many missing and many of them were injured.
There was an atmosphere of horror and panic as everyone's lives were in jeopardy.
Jeremy ran towards the figure that stood on the heaps of bones.
A murderous aura leaked from her sending a chill down the spine of everyone who tried to approach her.
Witnessing the scene of slaughter caused by a beautiful lady was a horrifying scene for those who fawn over them.
"Riya, I can't find Alex. He seems to be missing. I hope that nothing bad might have happened to him." Jeremy spoke worriedly.
"Don't worry, he will be alright," Riya said while staring deep inside the forest.
"He might have some loose ends to tie."
