The sky was dark, and the clouds were filled with black clouds, as if a rainstorm was about to fall.

Merlin sat in the quiet room, he had already let the night and Lady Fili keep watch, and let him know if there was any situation, after all, in this strange city of Dara, Merlin still had to be careful.

"Huh".

In Merlin's hand, a thunder stone appeared, which was a treasure he bought at auction, perhaps for others, it could only be used as alchemy material, but if Merlin wanted to cultivate a fusion magic energy Thunder Fury, he had to need a thunder stone.

Cultivating magic energy, Merlin is already very familiar with it, he doesn't have thunder magic energy, so he can practice very smoothly, Merlin first followed the steps above the thunder, and carved some patterns on his arm, after these mysterious patterns were depicted, he faintly had a very special connection with the thunder spell model in his body.

This can be regarded as the basis for cultivating thunder magic energy, and then there is the Thunder Stone, Merlin gently placed the Thunder Stone on the mysterious pattern on his arm.

"Buzz".

Suddenly, a burst of lightning flashed, and at the same time, a trace of numbness appeared in the arm, and the fist-sized thunder stone was gradually melting at this time, and gradually entered the pattern, and the originally very faint pattern gradually became dazzling at this time.

"Wow!"

The thunder stone shook slightly, and then quickly turned into a puddle of golden liquid, and quickly flowed into the pattern on the arm, and suddenly, some phantoms appeared on the pattern, and quickly floated in midair.

These patterns also shimmer with a trace of electric light, exuding a terrifying aura. Even Merlin sensed a little tyrannical.

"This is the first form of Thunder Fury?"

Merlin hesitated a little, although according to the steps, he had completed all the steps of the Thunder Fury cultivation, but he had a strange feeling in his heart.

"Thunder's Fury!"

Immediately, Merlin cast the Thunder Fury, which he had just cultivated, as a fusion magic energy, which appeared along with the thunder spell. Merlin now only has ice and thunder spells and has not yet constructed a level 5 spell, so he can only cast a level 4 thunder spell Thunder Domain.

"Boom".

A huge thunderclap rang out, almost filling the air. Thick thunderbolts flickered in the sky. The entire city of Dara seemed to be shrouded in terrifying thunder.

"This ......"

Merlin was also shocked, the original fourth-level lightning spell was far from being able to achieve such a shocking effect as now, so the only explanation. It's after fusing the magic energy of Thunder Fury. and the resulting changes.

It's just that. This change is really too big, and now there is such a big movement, I am afraid that the entire city of Dara will be alarmed.

Merlin's heart moved. After receiving the spell, the power of the Thunder Fury, he already understood a little, this is a pure offensive type of magic energy, in terms of attack power, it is much more powerful than the fire of collapse.

What's more, it's a large-scale attack spell!

"This is only the first form of Thunder Fury, now I can continue to cultivate, and directly cultivate to the second form!"

Merlin has always relied on extinguishing fire as his main attack method, because the attack of fire spells is indeed very powerful, but now he found that compared to thunder spells, especially lightning spells combined with magic energy, fire spells are still at a disadvantage.

Of course, perhaps the reason is that Merlin's extinguishing fire was only forcibly integrated into the fire spell.

Now Merlin only cultivates the first form of Thunder Fire, but there are three major forms of Thunder Fury, and now that Merlin has built a fourth-level thunder spell, it meets the conditions for cultivating the second form.

Therefore, Merlin now plans to cultivate the Thunder Fury directly to the second form in one go, and if he cultivates to the second form, he doesn't need to consume the Thunder Stone anymore, he has already absorbed too many Thunder Stones just now, and he only needs to cultivate the patterns on his arm.

These patterns are called thunder patterns, which are the key to cultivating the wrath of thunder, Merlin gathered the thunder elements according to a special method, and slowly floated around these thunder patterns, and then, one by one, the thunder patterns were rapidly thickening, and the color was gradually deepening.

"Whoa".

Thunder Pattern shook violently, made a sound like a stream of water, and carved into Merlin's skin again, and Merlin felt that his control over the thunder element was stronger, and he even became kind to the thunder spells.

"The second phase of Thunder's Fury!"

Merlin finally breathed a sigh of relief, the power of the second stage of Thunder Fury has increased again, and the power of Thunder Fury has now obviously surpassed the fire spell fused with the fire of dismemberment.

Then, Merlin stretched out his hands, and suddenly, his left and right hands burned with a ball of flame and a trace of thunder and lightning respectively, which were fire spells and lightning spells.

These two spells actually gave Merlin a sense of fusion, which was extremely unique, as if the fusion between thunder and fire could burst out with great power.

"Fusion?"

This was just a natural occurrence, and even Merlin felt strange, and then, he combined a trace of thunder and lightning with flames to form a thunder fire.

The power of thunder and fire can be increased several times in an instant, and the flame and thunder and lightning are combined with each other.

"Bang".

However, before Merlin could be happy, the powerful thunder and fire formed by the thunder and lightning and the flames exploded in an instant, and the flames splashed everywhere, and the thunder and lightning rushed in all directions like snakes, blasting the ground into several large craters.

Merlin frowned slightly, he held his chin and groaned for a while, feeling that this seemed to be somewhat similar to a ninth-level spellcaster, trying to fuse spells and become an archmage.

However, if the archmage fuses the spell, the spell model will be fused, and the power of the spell after the fusion will be terrifying.

And Merlin's thunder and lightning just now are just the fusion of spells with each other, not the spell model is also fused, but even so, once fused, the power of the spell will explode.

It's just that, because the first fusion is not stable, so it exploded, which also shows that spell fusion is not simple, and it takes time and time again to try again and again to find a meeting point to be able to fuse, and the current Merlin doesn't seem to have such an ability.

After cultivating the Wrath of Thunder, Merlin will also cultivate another kind of ice fusion magic energy, called the Ice of Bondage, as the name suggests, this magic energy is to improve the binding ability of ice spells.

Moreover, this is a fusion magic energy that has three forms, and it is also very powerful. Merlin also received the Essence of Extreme Cold from the auction, and he was able to cultivate the Ice of Binding immediately.

Merlin now has a faint expectation for the cultivation of the Ice of Bondage, and he also wants to see if the Ice of Bondage will be able to "fuse" with a certain spell like the lightning magic energy once it is cultivated.

Merlin was keenly aware that this might have a close connection with whether he could become an archmage in the future.

So, Merlin began to take out the Extremely Cold Marrow, and suddenly, a layer of ice crystals quickly froze out of his hand, and with a shake of his hand, a layer of light white flames quickly rose up, melting the ice crystals.

Merlin took a deep breath and incorporated the Arctic Chill into the mystical symbol of the Ice of Bondage, and then Merlin waited expectantly...... (To be continued......)