In Fairy Tail, starts with a Super Mega Gengar

A few days ago, during the battle against Unicorn, a thought popped into Gaal's mind. Since he couldn't exchange for the Divine Beast's original source now, could he perhaps create one? Once this idea appeared, Gaal couldn't hold back. He knew that a massive magical creature like Unicorn was extremely rare in the entire Fairy Tail World.

Aside from large demons and dragons, it's almost impossible for ordinary magical beasts to grow so large. Although he didn't know what caused Unicorn's mutation, its enormous body and water element control powers made it a killing machine in the sea. Having it slaughtered in the river of Monet seemed like such a waste.

The Fiore Kingdom was by the sea, with the Alvarez Empire across the water—a super empire made up of over seven hundred guilds. Considering the wars to come, Gaal couldn't help but prepare in advance. Facing the giant dragon Unicorn could be done easily, but if it took place deep in the ocean, human mages or armies would have a hard time dealing damage. Instead, if Unicorn stirred up massive waves, it would become difficult for the Alvarez army to cross the sea. Unless a powerful dragon or mage dived thousands of meters underwater to hunt Unicorn, it wouldn't be easily killed.

Gaal had never done such a modification before; after all, ordinary Pokémon could handle most magical creatures, so there was no need to go through the effort of altering regular magical beasts. Therefore, for the modification concerning Unicorn, Gaal, apart from a few preliminary tests, fully activated Time Magic just in case he needed to reverse any mishaps that might harm Unicorn's soul or brain.

As the Water Stone Plate submerged into Unicorn's brain, Gaal's magic started to gradually occupy Unicorn's body until he completely controlled it, allowing the Water Stone Plate to temporarily act as Unicorn's brain, sending out commands.

Once he confirmed everything was working, Gaal took a deep breath, his eyes radiating a divine golden light. He raised his hand toward Unicorn's brain, gathering a dazzling blue brilliance in his palm: "First is... the Primordial Sea Trait." The bright blue light merged into Unicorn through a wound on its forehead. In an instant, the blue glow swept across Unicorn's entire body. Unicorn's massive form trembled, with the tentacles frozen in the snowy ice surface instinctively twisting and emitting involuntary howls.

Suddenly, the creature's aura rapidly dissipated. Gaal immediately triggered Time Magic to reverse the situation, restoring it to its original state. He methodically adjusted everything, repeating this process until half a day later when he finally began to slow down. Unicorn's aura seemed dimmer and weaker than before, but this indicated that the first step had been successful. Gaal smiled, anticipating the next stage. 

Next came the conversion of various skills to fit Unicorn's capabilities. "Fearsome Face? That won't need modification; it's already ugly enough on its own. Ice Beam... let's have it fire from its eyes. Seven Eyes should be enough. Primordial Power... Water Waves... Water Gun..."

Gaal gradually immersed himself in modifying Unicorn, ideas flowing through his mind continuously. Days passed in the blink of an eye. 

Meanwhile, in Magnolia Town, within the Fairy Tail Guild, Laxus watched the others play around with a mix of annoyance and envy. No matter how hard he tried, he couldn't focus on the grimoire in his hands. Even Cana, who had joined two years ago, was already learning magic, while he... Laxus felt a deep resentment toward himself for being so useless. It was one thing that he couldn't withstand his grandfather's Light Magic; he also couldn't inherit his father's Illusion Magic.

At that moment, Makarov approached with a letter in hand: "Laxus." 

Laxus looked up and, seeing his grandfather, quickly put the grimoire down and stood up: "Grandpa." 

Makarov glanced at the grimoire in front of Laxus and nodded: "Studying is important; learn some foundational knowledge. It will be beneficial when you use magic in the future. That kid Gaal is always reading from a grimoire. You'll be stronger than him one day." He sat down next to Laxus.

Laxus forced a smile: "It's not that simple. Gaal's talents are so high; he can learn any magic easily. I..." Laxus struggled to continue his thoughts. It wasn't that he couldn't learn magic, but with his grandfather being a Ten Wizard Saints and his father an S-Class Mage, if he couldn't resolve his physical limitations, he would only be able to learn some basic written magic and Take Over Magic—a mundane form of magic. He couldn't settle for that.

Makarov sighed internally, knowing of his grandson's pride. Luckily, it seemed the issue had been resolved. Makarov pulled out the letter he had in hand: "Don't worry. Your father has already figured out a solution to your physical problem. He's gone to the Southern Continent and brought back a magic crystal. It's made from the heart of the Thunder Dragon King. As long as you integrate this magic crystal into your body, your physical issue will be resolved easily. Not only will you be able to withstand powerful magical forces, but it will also gradually modify your body, allowing you to learn the forgotten Dragon Slayer Magic."

Upon hearing this, Laxus's face lit up with joy: "Really?! Grandpa!!" He eagerly took the letter and gazed at his father Ivan's handwriting, a smile and look of anticipation blossoming on his face: "Dragon Slayer Magic?" 

Makarov nodded, smiling as well: "Yes. It transforms the human body into that of a dragon, granting the power to slay dragons. That's why it's called Dragon Slayer Magic. Unfortunately, with the disappearance of dragons, Dragon Slayer Magic has become lost; as of now, it can only be attained through magic crystals. You're fortunate that your father got one and is already on his way back." 

Laxus excitedly nodded, speechless. 

Makarov smiled affectionately, then thought of something: "That reminds me. I remember Gaal can apply amplification magic too. I believe he once created a wand and engraved an Amplification Array into it. When used for Water Element Magic, it can achieve a fivefold amplification. I'm thinking whether we should call him back to let you try it?"

For his grandson, Makarov was ready to go all out to ask Gaal for help. 

Laxus's eyes widened: "Fivefold amplification?! Then that means... I could have five times the physical abilities of a dragon!" Laxus was filled with exhilaration, looking eagerly at Makarov. 

Makarov could only rub his forehead: "That's impossible. Just thinking about five times a dragon's physical abilities is unrealistic. However, Gaal's amplification magic could indeed enhance the power of elemental crystals, and that's real. Do you want to give it a try?

Perhaps you might become the strongest Dragon Slayer Mage in history. Just don't get your hopes too high; magic crystals and elemental gems are not the same thing. If it works, that would be splendid. But if it fails, then it would just be a wasted effort, and you'd still have to go through the usual integration of the magic crystal."

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