Peace returned to the Dark Magic Region but the departure of their Ninth-level Spell Caster still caused a lot of discussions. Perhaps others did not know what this meant, but Merlin, who personally experienced Blacksand Fort, knew exactly how serious this matter was.

"Ninth-level Spell Casters were invited, and the three large spell casters' organizations have signed an agreement. They're really going to act against Ozmu. They've gathered almost all the forces in the southern Spell Caster world!"

Merlin was very clear that if even a small spell casters' organization like the Dark Magic Region was invited, it obviously meant that those three large-sized spell casters' organizations were ready to act.

Ozmu could fight against almost all large spell casters' organizations. Although it had great strength, the deeper reason laid in the fact that Ozmu's old nest was too hidden. Even if large spell casters' organizations wanted to destroy it, they could not as they cannot find the place.

This was somewhat different from the Dark Magic Region where one could kill a member of the Dark Magic Region and seize the Dark Magic ring to forcefully enter the Dark Magic Region. However, no one knew where Ozmu's old nest was located as it was incredibly mysterious.

This time, it was different. Blacksand Fort knew where Ozmu's old nest was. Perhaps it was because of this that Ozmu became reckless and decided to send Spell Casters led by the Black-White Great Wizard to attack Blacksand Fort.

Fortunately, Blacksand Fort also had a hidden trump card, which was a powerful Guardian Spirit that even the Black-White Great Wizard was no match against. The chaos in Blacksand Fort had instead brought together the forces in the southern Spell Caster world.

"Chaos is coming. I have to hurry and increase my Mind Power!"

Merlin returned to the Wizard Tower. This time, he frantically brewed potions day and night. As Merlin grasped the fire handling of potion-making and became more skillful, his success rate of brewing Mokra Potions also increased. What was originally a thirty percent success rate was increased to a nearly forty percent success rate.

Merlin was overjoyed by such a high success rate. Mokra Potions were extremely valuable, and although its effects had decreased now, it was still much more effective than the Bell Space and other potions.

He prepared several portions of Mokra Potions daily and used the next several days to consume the potion to increase his Mind Power.

Thus, Merlin's Mind Power very quickly rose to the beginning stage of the Fifth-level, then to the middle stage of the Fifth-level, and continued to grow, gradually reaching the peak of the Fifth-level.

At this time, more than a month had passed. Wizard Delma never returned even once, and the southern Spell Caster world remained peaceful as always.

However, Merlin knew that behind the peace, a huge storm was brewing.

"Peak of the Fifth-level. I can try constructing Fourth-level Spells now!"

Merlin finally stopped brewing Mokra Potions. He had consumed almost half of the Mokra Potions that he had prepared, and his Mind Power had reached the peak of the Fifth-level.

A large amount of accumulation was needed to increase one's Mind Power from the Fifth-level to the Sixth-level and it was impossible to do so in a short amount of time. Hence, Merlin did not continue brewing Mokra Potions and chose to construct spells instead.

At Merlin's current Mind Power level, it was not difficult to construct Fourth-level spells at all. He could construct several Fourth-level spells. Although it was unlikely that he could successfully construct Six-Elemental spells, there was no problem constructing the most powerful Fourth-level spells.

The difference was that the Fourth-level spells that needed to be constructed were, in the end, ordinary Fourth-level spells that used the Maxim as well as consumed the power of the Flame Maxim to derive a completely new Fourth-level spell.

"Matrix, derive new Fourth-level Fire-type Spell Model!"

Merlin activated the Matrix and started to check the two hundred and more Fourth-level Fire-type Spell Models derived after he consumed the Flame Maxim.

In the beginning, due to Merlin's insufficient Mind Power, he did not construct these Fire-type Fourth-level spells. However, it was different now. Merlin's Mind Power had reached the peak of the Fifth-level and was enough to construct several Fourth-level spells.

Most of the two hundred or so Spell Models had very high compatibility. They were all at least ninety percent and above, and there were even some with a hundred percent compatibility.

The biggest difference between the derived Spell Models and ordinary Spell Models was compatibility. Moreover, by deriving a new Spell Model according to the previously constructed Spell Models, the compatibility could reach a hundred percent.

Now, Merlin had to choose a Spell Model with a hundred percent compatibility. He would only be able to fully bring out the power of a Spell Model that way.

Merlin looked closely at the Fire-type Spell Model which he had constructed before. The Zero-level spell Fireball, First-level spell Furious Flame, Second-level Sea of Purgatory Fire, and Third-level spell Condensed Fire.

Apart from the ordinary Fireball, all the other spells were extremely complicated and were Offensive spells. Their offensive power was outstanding among other spells.

In this way, Merlin's choice of his Fourth-level spells had to be extremely violent, have very strong Offensive power, and possess high compatibility. Among the two hundred or so Spell Models, Merlin only found two such spells which fit his criteria.

After careful screening, Merlin finally picked a Spell Model that was derived by the Matrix. It had a hundred percent compatibility with the Spell Model constructed by Merlin previously, and was frighteningly powerful.

Such a powerful Spell Model should be very complicated and extremely difficult to construct, but newly derived spells were not like that. Spells that were derived by the Spell Casters themselves according to the situation were very convenient to construct, and the difficulty would be greatly reduced as well.

Basically, as long as one could derive new spells by themselves and had sufficient Mind Power, then one would basically be able to simulate the success of a spell in the Awareness. It was very simple and was also one of the benefits of deriving a spell.

Since he chose the spell, Merlin began to maneuver all his Mind Power and concentrated in simulating the first derived Spell Model.

Time passed bit by bit. Although the derived Spell Model was a good simulation and was not too complicated, it still required a long period of time.

"Boom!"

An unknown amount of time passed before Merlin's Awareness shook fiercely. A huge Spell Model appeared in his Awareness, and countless Fire Elements frantically entered the new Spell Model, quickly converting into Magic Power.

"It finally succeeded! My first Fourth-level spell!"

Merlin could feel that his Awareness was currently full of raging flames. Compared to the Fourth-level and below spells constructed before, a Fourth-level spell really was quite different.

It was just a single Fourth-level Spell Model, but its power was almost equal to all the previous Spell Models. Of course, that did not include the Pandora Demon Ability.

Fourth-level spells were a qualitative improvement. Merlin could clearly feel that the Spell Model of newly constructed Fourth-level Fire-type spell greatly suppressed the other Spell Models in his Awareness.

"Let's see how powerful it is."

Merlin sucked in a breath and felt that some Magic Power had accumulated in the Spell Model, so he used his Mind Power to simulate it and immediately released the spell.

"Boom!"

Flames covered the sky, faintly descending and enveloping the entire room. Everything that was touched by the flames was reduced to ashes.

"How powerful! The power of the spell itself can rival the power of ordinary Sixth-level spells!"

Merlin was pleasantly surprised to see that the derived spell power was so terrifying. He also noticed that the ability to release a strengthened version of the spell after releasing three ordinary spells had disappeared.

Merlin rarely cast the strengthened version spells after he cultivated a powerful Pandora Demon Ability. Merlin did not know what caused the strengthened version spells and why there were strengthened version spells.

However, now, Merlin slowly understood.

It was because the previous spells did not have a hundred percent compatibility and could never reach the point where it was most compatible with the Spell Caster. Therefore, the power of the spell could not be maximized.

Previously, the strengthened spells helped Merlin to bring out the true power of the spell into play. Now, after the new spell was derived by the Matrix using data integration, the compatibility became almost a hundred percent, reaching the point of perfect compatibility.

Therefore, the Fourth-level Fire-type spell which Merlin had constructed could be used to its full power at any time. There was naturally no strengthened version of the spell because the spell itself was already at the pinnacle of its power.

"I never thought that derived spells would be able to use its full power! The spell was able to burn everything in the room into ashes. With this formidable power, this completely new Fourth-level spell shall be called Incinerating Fire."

Merlin named this brand-new Fourth-level spell. Henceforth, there was a new Fourth-level spell in the world, Incinerating Fire!

Even in the future, Merlin could pass down Incinerating Fire, and make it a powerful spell unique to the Wilson clan.

Seeing the might of Incinerating Fire, it was indeed very powerful and could rival Sixth-level spells. However, it was not enough just by relying on the strength of the spell. There were still fire-type Pandora Demon Abilities!

Presently, Merlin only had Fiery Collapse, which strength was also quite strong. Although it was a Pandora Demon Ability that could not be combined with spells, it was suppressed by the Flame Maxim and forcefully fused into the Fire-type spells, so it also played a role in making the spells incredibly powerful.

Now, Merlin wanted to try and see if he could fuse Fiery Collapse into his newly constructed, brand-new Fourth-level spell, Incinerating Fire.

This kind of attempt was extremely important. Once successful, the power of Incinerating Fire would increase multiple folds.

Thinking about this, Merlin no longer hesitated and started to control Fiery Collapse.

"Fuse!"

Merlin immediately tried to fuse Fiery Collapse with Incinerating Fire.