"Ka-chak."

The frigid ice bone marrow penetrated deeply, almost completely freezing Merlin's body. Layers of ice crystals rapidly formed on Merlin's skin. However, Merlin did not care. Instead, he stared unwaveringly at the mysterious runes carved on his arm, which was the key to cultivating Binding Ice.

"Hum."

The runes of Binding Ice gradually emitted a faint blue color. Then, they merged into the skin on his arm and formed light imprints.

Binding Ice was successfully cultivated!

However, Merlin did not relax. He was fusing Binding Ice and Pandora Demon Ability into the Ice-type spell where Merlin felt a slight sign of a Wind-type spell wanting to fuse with Binding Ice.

Merlin's heart rejoiced that the phenomenon had happened again. It was the same feeling of wanting to fuse, like the feeling he got from the Fire-type spell after he cultivated Thunder Fury.

However, this time, Merlin was much more cautious. He gradually released the Wind Element and observed the changes between the Wind-type and Ice-type spells.

Slowly, the Wind-type and Ice-type spells fused together. The Wind-type spell was a Speed-type, and was extremely quick. Where it passed, there was also the Ice-type spell binding properties.

Thus, the combination of two spells allowed the binding ability of Merlin's Ice-type spell to increase multiple folds. This time, Merlin was extremely careful. However, after only a moment, the spell could no longer stabilize and completely collapsed.

Merlin already had some certainty in his heart. He knew that it was completely impossible for him to completely fuse spells now. However, with regular practice, it was possible. It was just temporary fusion between spells, not completely fusion between Spell Models.

In a fight with an opponent, even the power of a temporarily fused spell would increase dramatically. At that time, he would be able to grasp the advantage by taking his opponent off guard.

"I never thought that cultivating a Pandora Demon Ability would have such an unexpected reward."

A smile was revealed from the corner of Merlin's mouth. Spell fusion, although temporary, was still quite a shocking and sudden discovery. When he cultivated Pandora Demon Abilities in the past, there had been no such accident.

Perhaps it was because his Mind Power was weak then, or because his spell levels were not high enough or because his Pandora Demon Abilities were not refined enough. No matter what reason it was, spells could be temporarily fused. As long as he practiced continuously, and extended the time for spell fusion, Merlin's power would be raised to a terrifying point!

After cultivating Six-Elemental Pandora Demon Abilities and fusing Pandora Demon Abilities into every Elemental spell, Merlin was satisfied. When he became a Great Wizard in the future, he would become a peak Great Wizard standing at the very top.

However, Merlin still needed to use the Hallucinatory Heart to raise his Mind Power. Ideally, he would break through to Seventh-level Mind Power in one shot, throw off his shackles, smash through the bottleneck, and achieve a fundamental change in his Mind Power!

Only when his Mind Power reached the Seventh-level would Merlin be able to construct the remaining Fifth-level Ice-type and Thunder-type spells, and truly become a powerful Fifth-level Spell Caster!

"Swoosh."

Merlin took out the Hallucinatory Heart from his ring. Instantly, the entire room seemed to fall into an illusion. The myriad of colors made the room look like a dream.

This was the characteristic of the hallucination from the Hallucinatory Heart. However, Merlin's current Mind Power could be considered to be quite strong, so a single Hallucinatory Heart naturally would have no effect on him.

"So, this is the Hallucinatory Heart."

Merlin took a deep breath. He already knew how to use the Hallucinatory Heart, so he used his Mind Power and quickly spread it inside the Hallucinatory Heart.

In the Hallucinatory Heart, Merlin felt like he had entered an illusory world. Colorful bubbles surrounded and wrapped every trace of Merlin's Mind Power.

It was like this was a world of bubbles, with tens of millions of colorful bubbles everywhere. Merlin had a lot of Mind Power, and every strand of Mind Power was as thin as a hair but they were still completely wrapped by the bubbles covering the sky. The enveloped Mind Power then started to frantically expand.

Every strand of Mind Power expanded multiple folds. When the fused Mind Power withdrew from the Hallucinatory Heart, it seemed like his Mind Power as a whole had also increased several times.

Merlin only then felt the miracles of the Hallucinatory Heart. It was not surprising that so many powerful Spell Casters competed to obtain the Hallucinatory Heart. However, it had ended in Merlin's hand.

"Phew…"

After an unknown amount of time, Merlin let out a long breath and looked at the Hallucinatory Heart. It had shrunk drastically.

"Mind Power had always been illusory but after reaching the Seventh-level, it can transform into a substance and interfere with matter!"

Merlin had always remembered that Seventh-level Mind Power was a dividing line. Once reaching it, Mind Power would no longer be illusory but be able to interfere with matter. Although it was just in the boundary between illusion and reality at the Seventh-level, it already had the ability to interfere with some matter.

When Great Wizards reached this stage, their Mind Power would become extremely strong. Sometimes, coupled with some secret spells, Mind Power could even be stronger than some spells. With just a simple thought, Mind Power that could interfere with matter would be capable of setting off monstrous waves.

It was so much so that even those Legendary Wizards could switch the color of the sky and change their situations with just a thought. Everything really could be changed with just one thought!

However, this was still too far away from Merlin. Now, he only wanted his Mind Power to break through to the Seventh-level.

The Hallucinatory Heart had shrunk but Merlin's Mind Power had expanded several times. However, there was still no sign of his Mind Power breaking through to the Seventh-level. His Mind Power was still completely illusory, just like a cloud of transparent vapor.

Merlin did not mind. He knew that breaking through to the Seventh-level Mind Power was extremely difficult because it was a qualitative change. To turn illusion to reality, although it was only half substantial, it was also extremely unique and required a large amount of Mind Power.

Thus, he continued to extend his Mind Power inside the Hallucinatory Heart, and his Mind Power started to grow rapidly.

With the passage of time, the Hallucinatory Heart became smaller and smaller, gradually shrinking from the size of a fist to the size of a chicken egg, and before long, to the thickness of a finger.

On the other hand, Merlin's Mind Power gradually became viscous as if turning from a gas into a liquid. Merlin knew that this was the key for Mind Power to transform to the Seventh-level. In order for that to happen, he had to mobilize his Mind Power and frantically revolve it in his Awareness until it formed a sphere.

This Mind sphere was called the Mind Heart, and was the foundation of all Spell Casters' Mind Power. Once the Mind Heart was formed, the amount of Mind Power would depend on the specific circumstances of each Spell Caster.

This time, because of some special reasons, after several Spell Casters condensed a Mind Heart, their Seventh-level Mind Power could rival Eighth-level or even Ninth-level Mind Power.

That kind of Mind Heart was called the Special Mind Heart, which was exactly what Merlin wanted to condense.

After an unknown amount of time, the Hallucinatory Heart in Merlin's hand gradually disappeared after being completely absorbed by his Mind Power. Even Merlin did not know how much his Mind Power increased by.

He could only sense that his Mind Power was too tremendous. The transparent Mind Power that only he could sense had reached the moment of condensing into a Mind Heart.

"Boom."

Merlin mobilized his Mind Power, and that unfathomably large Mind Power instantly began to gradually rotate. It picked up speed as it spun, and from a transparent and colorless Mind Power, a faint silver light gradually appeared as it rotated.

Very quickly, the Mind Power turned from an illusion to reality, and a Mind Seed the size of a grain of sand was condensed. This was Merlin's first Mind Heart!

Joy sprung from Merlin's heart. He finally condensed a Mind Heart. However, this was not enough. His Mind Power was still very large, and he had to condense all his Mind Power into the Mind Heart for him to have considered having condensed a Mind Heart.

Thus, as more and more Mind Power gradually gathered in the Mind Heart, it soon grew bigger. From the size of a grain of sand to a soybean, and finally to an infant's fist, it still seemed to continue growing.

However, when his Mind Power was almost depleted, Merlin suddenly opened his eyes. His eyes seemed to be suffused with a silver light. This was because his Mind Heart had already been condensed, and was emitting a brilliant and resplendent silver light in his Awareness.

Mind Power constantly affected Merlin. Therefore, without controlling it, a silver light glowed from his eyes. Now that he had a Mind Heart, he could slightly stir the air with his thoughts.

"Phew…"

Merlin used his Mind Power to disperse some of the air around him, which instantly formed a bout of cool wind. This was an example of using Mind Power to interfere with matter to cause a breeze.

However, with Merlin's current Mind Power, this was all he could do. He could not move a heavy object at all. He needed to continuously increase his Mind Power.

Nevertheless, Merlin was still not satisfied with this infant fist-sized Mind Heart in his Awareness. He wanted to condense a Special Mind Heart but if he let his Mind Heart expand like this, there would be a limit in the future. At that time when he reached that limit, he would have to break through to the Eighth-level, and his Mind Heart at that time might not be able to contain much Mind Power.

Thus, Merlin still needed to compress his Mind Heart, and he did it immediately after thinking about it. Merlin closed his eyes again and started mobilizing his Mind Heart, rotating it at an even terrifying speed.

Compress, compress and compress again! Merlin tried every method to compress the infant fist-sized Mind Heart. Sure enough, the volume of the Mind Heart shrank rapidly, indicating that Merlin's Mind Heart was indeed far from being compressed to the limit.

Very quickly, Merlin compressed the Mind Heart to the size of a ping pong ball. The tightness of the Mind Power inside the Mind Heart was even more frightening.

Such a high-intensity compression showed that Merlin's Mind Heart still had a lot of room for growth in the future, and could fuse more Mind Power. It could be regarded as an extremely strong Special Mind Heart!