In the dark cave, the skinny silver-haired old man was currently squinting his eyes. A satisfied grin formed on his face.

"Not bad. There are still some geniuses amongst the Spell Casters of the Dark Magic Region. That Spell Caster with Five-Elemental spell. Tsk, tsk. I'm afraid he's an outstanding genius in the Dark Magic Region. Sadly, he must die in my baby's hands. Hehe!"

"However, that Four-Elemental Spell Caster is rather troublesome. His Runic Robe is quite strong. Someone who has a Runic Robe may have other powerful casting tools. I should take note of that."

The silver-haired old man seemed to be observing the situation of Merlin and Holmes through a certain method. He was warier against Holmes. In his view, although Merlin possessed Five-Elemental spell, he could not win against the Dark Vampire Bat he controlled.

"If it's impossible, I can only wait for my baby to kill that Five-Elemental Spell Caster, then let both my babies kill that Four-Elemental Spell Caster."

The silver-haired old man still wore a rather relaxed look. His eyes stared into the giant pool of blood under the altar absent-mindedly. No one knew what he was conspiring now.

"Boom!"

Suddenly, the whole cave seemed to tremble as if it was crumbling apart. The tremble quickly came to an end but the expression of the silver-haired old man had turned dark. His face looked gruesome, almost twisted together.

"Dead… My baby is dead. I want them buried with my baby!"

The silver-haired old man wore a dark expression. He said with gritted teeth and his words were filled with a brutal tone.

Lying in the pathway of the cave, Wizard Danbe laid dead. Catherine and Capace were also injured. They were now withholding their pain and hiding at the sides of the cave.

Even Laurinka had stayed on an alert. Her whole being was giving out intense fluctuation of Element.

"Thunderbolt Net!"

Merlin's gaze was focused as he cast Thunderbolt Net immediately. In an instant, thunder kept flashing in the narrow cave, painting the dark cave as white as day.

The powerful strength of thunder brought upon by Thunderbolt Net was nothing less than the attack power of Fireball. That was why he could work with Holmes and eliminated so many Dark Vampire Bats.

However, Thunderbolt Net was used against the evolving Dark Vampire Bat now. The effect of thunder on the Dark Vampire Bat slowed down its pace slightly.

Meanwhile, the paralyzing effect of Thunderbolt Net did not affect the evolving Dark Vampire Bat at all.

"No effect?"

As he watched the rapid accumulation of Darkness Element around him, Merlin knew this Dark Vampire Bat was again preparing for its spell. Hence, he did not hold back anymore.

"Rumble!"

A thick pillar of thunder appeared out of thin air, forming a much stronger Thunderbolt Net than before. Merlin finally activated the strengthened version of Thunderbolt Net. This was the first time Merlin cast the strengthened version of the spell after constructing so many Spell Models.

The overall ability of this Dark Vampire Bat was obviously above any normal First-level spell Caster. A normal level-zero spell had no effect on it anymore.

Thus, only Merlin's strengthened version of the spell could cause some damage to it.

If the thunder of Thunderbolt Net Merlin cast before was only the size of a single strand of hair, then the thunder of this strengthened version was the size of a finger. The power contained in it was naturally very much different.

Thick pillars of thunder were blasted on the Dark Vampire Bat one by one. Even if the Dark Vampire Bat had already started evolving, it was still screeching right now. Its speed gradually slowed down and the redness on his body slowly receded.

Finally, the Dark Vampire Bat was finally paralyzed in five meters before Merlin!

Merlin was elated. His true trump card was, in fact, his strengthened version of spells. Once he cast the spells, each spell would infinitely behave like a First-level spell.

Thus, he also knew that the paralyzing effect of Thunderbolt Net could not be maintained for long, so he kept casting spells.

"Large Frost!"

Strands of chilly air engulfed the Dark Vampire Bat fiercely like a snowstorm. However, this Dark Vampire Bat was no less expected of one which was evolving into an Elemental Being. Even Large Frost was unable to annihilate it.

However, Merlin had more skills up his sleeve. A gigantic fireball appeared before him. Its scorching heat could be felt even by Capace and Catherine who were far away from him.

"Large Fireball. Explode!"

Merlin howled and the gigantic fireball lit up the dark cave. Then, it whistled by and flew toward the Dark Vampire Bat. Meanwhile, the Dark Vampire Bat, which was completely frozen by the Large Frost, could not defend against this gigantic fireball at all.

"Boom!"

A loud bang rang when the gigantic fireball exploded. Since the space in the cave was too narrow, the aftermath created from the explosion was shockingly large. It seemed to cause the whole cave to tremble.

Even Merlin could not stand the scorching heat wave, so he could only cast Gale and hid behind.

After a while, the cave resumed its peacefulness. The fire earlier had turned the cave as bright as day but the cave fell into a total darkness again now.

Merlin's Mind Power did not relax at all. He extended his Mind Power into the dust and checked the situation of the Dark Vampire Bat. However, no matter where he looked, he could not find a trace of the Dark Vampire Bat.

"Is it dead?"

Merlin finally heaved a sigh of relief. The Dark Vampire Bat which was frozen by Large Frost eventually could not withstand Large Fireball and turned into dust completely.

This also showed that the Dark Vampire Bat was only starting to evolve into Vampire Bat King. Once it had become a Vampire Bat King, it would be a terrifying Elemental Being. Even if it was dead, it would leave a body just like any normal living being.

Obviously, this Dark Vampire Bat had turned into dust. Just like the Darkness Vampire Bats which Merlin encountered outside of the cave, they dissipated after they died. They were not living beings but Elemental Monsters were different as they were completely made up of Element.

After dealing with this strong Dark Vampire Bat, Merlin set his gaze on the injured Capace and Catherine. Although both were injured, the injuries were not fatal.

Thus, Merlin said coldly, "If I'm you, I'll leave the cave now and stay outside."

Catherine could no longer speak due to the excruciating pain. Meanwhile, Capace tried hard to stand up and supported Catherine gently. A hint of regret flashed across his face as he muttered softly, "We're too naïve… Wizard Merlin, we'll leave the cave now and wait for you outside."

After that, Capace supported Catherine as they slowly walked out of the cave.

Merlin shook his head slightly. Although they experienced some hardships this time, it was not a bad thing after all. However, he soon placed his gaze on the pathway in front of him which remained dark. With a small frown, he said, "Let's go. I have a premonition that we'll have a larger problem in front."

Laurinka stared at Merlin's back with a complicated look. Earlier, Merlin had not relied on any casting tool but he had annihilated a Darkness Vampire Bat which was comparable to a First-level spell Caster.

This was already not something that a usual Spell Caster could achieve. Without a doubt, there might be some shocking secret about Merlin.

"Maybe he's not completely without a chance to become a First-level spell Caster…"

Laurinka shot a thoughtful look at him and mumbled softly. After that, she hurriedly followed behind Merlin and continued walking into the deeper part of the cave.