Steadfast Wizard: From Heart-Swapping Rat to Dimensional Demon God

After halting the battle, Isaac sent the Black Knight back with the three sets of materials he had purchased, then turned and headed into the castle. He couldn't wait to learn magic!

The Black Knight, in particular, possesses such high intelligence that it can be commanded with simple commands in both combat and daily life. This intelligence surpasses the artificial intelligence available in the market in my previous life.

And this is just one of the lowest-end puppets!

Magic is getting more and more interesting!

Back in the lab, Isaac placed the three books he had bought on the bookshelf, and then with a "rip," summoned his demonic claws.

"Hehehe~" A hideous mouth appeared in the palm of the five Soul Hall elders' demonic claws, emitting an evil laugh as they gently rubbed Isaac's cheek with the back of their hands, like a small animal.

Isaac smiled slightly, gently patted the demonic claw, picked up the last bottle of Blood Essence potion from the desk, and poured it directly into the gaping maw of the demonic claw, which was full of serrated teeth.

"Hiss~"

The demon claw chewed twice, and the magic potion transformed into a blood-red stream of light that flowed into the meridians, beginning to strengthen the demon claw.

Although the Demon Claw exists between reality and illusion, it is essentially a demonic pet, and it is a demonic pet formed from a part that Isaac plundered from the demon through a ritual. Therefore, it has bloodline, demonic bloodline.

It can also take bloodline essence potions, and since the magical pet and the wizard are one, giving it to Isaac is the same as giving it to him, so it doesn't hurt to use it at all.

And this is just the appetizer. According to the information Isaac just got for free in Lake Town, the Hand of God is a classic magical pet in legendary wizards. It is convenient, powerful, and has many training options.

Bloodline Essence Potions are just the foundation.

"Hiccup~"

The Claw burped, its claws curling up shyly. Isaac smiled slightly, patted the back of the Claw's hand, and then shooed it away.

Now is... study time!

Although he bought new books, Isaac did not change his study plan. He still wanted to learn the three basic arcane arts first to improve his combat power. In this world where individual combat power is off the charts, it would be foolish to bury himself in research.

And so, three days passed in the blink of an eye. During these three days, Isaac did not frantically stay up all night studying magic, but returned to his normal routine. After all, although his physical qualities and energy were extraordinary after being modified by magic, he was still within the scope of a living being and needed to rest normally.

Even so, Isaac's progress was not much slower. He had completely mastered the three basic arcane spells: Arcane Missiles, Arcane Shield, and Arcane Warp, and had even begun to study one of the three magic books he had bought, "The Complete Book of Basic Spells".

However, that morning, Isaac put aside his spell studies and waited early in the training ground in front of the castle with a guard consisting of a junior knight and ten knights in attendance.

Today is the agreed-upon day to exterminate the goblins; they are here waiting for the Goblin Slayer to arrive.

Not long after, Smith dismounted with a man wearing tattered leather armor and a worn-out small sword at his waist. Goblin Slayer was completely covered up, with bandages on his hands and a black hood covering his head, only revealing his eyes, nose, ears and mouth.

It's clear that this Goblin Slayer is very poor.

But that's not surprising, since rich people all become knights, who would become Goblin Slayer?

Moreover, wealthy people wouldn't take on such a small job that only costs five gold coins.

Isaac had once considered becoming a Goblin Slayer, because it could genuinely increase his strength. Just like playing a video game, all he had to do was kill goblins. For someone as weak and sickly as him, it was indeed a good choice.

But he eventually gave up. First, Goblin Slayer was dangerous, and he was even more in danger due to his weak and sickly constitution. Second, no nobleman would become Goblin Slayer; doing so would be a disgrace to the nobility, which would have a significant impact. Third...

There's also the option of a legendary wizard.

However, as a former option, Isaac still knows a bit about Goblin Slayer, especially their attire. Being wrapped up so tightly is a rule of Goblin Slayer, a necessary step in obtaining power.

Of course, from Isaac's perspective now, he can see some traces of ritual magic in it. Goblin Slayer's ability to become stronger by killing goblins should be related to this ritual.

"Hello, I'll leave the rest to you. As agreed, you only need to find the goblins, and we'll handle the rest. Of course, you're welcome to participate in the battle if you wish." Upon meeting, Isaac immediately handed two gold coins to Goblin Slayer, and the remaining three would be given to him after the goblins were completely wiped out.

Goblin Slayer nodded, silently accepted the gold coins, and said nothing more.

"Young Master, are you going too?" Smith walked up to Isaac, his brows furrowed slightly.

"Don't worry, they're just some goblins. I know what I'm doing, and the Black Knight needs me to control him." With that, Isaac patted the Black Knight behind him.

Smith was still somewhat worried. As a retainer, he instinctively didn't want Isaac to take any risks, but he couldn't ignore Isaac's orders. He could only nod helplessly and say that if they paid more attention during the battle, there shouldn't be any major problems.

As Isaac said, just some goblins.

After a quick check of their equipment, the group set off.

Leaving the village and arriving in the wilderness, they saw Goblin Slayer squatting by the roadside. After groping around in the grass for a while, he pointed in the direction of the river.

Obviously, the goblins are over there.

"How did you figure that out?" Isaac, who had been watching from the side for a long time but couldn't figure it out, asked curiously. There were no traces at all; he had scanned it several times with his mental energy.

Goblin Slayer glanced at Isaac, then at the two gold coins in his pocket, and said, "Magic."

"...Okay, that's a reasonable explanation..." Isaac remained silent.

The answer is concise but correct; that's the answer.

The reason Goblin Slayer can deal special damage to goblins is largely due to the ritual magic he possesses. Only those who have been Goblin Slayers for over a decade can rely on their own skills to deal special damage to goblins.

After determining their location, the group followed Goblin Slayer's guidance and finally arrived at a small river around three or four in the afternoon, where they found seven or eight goblins fishing.

Isaac narrowed his eyes slightly, but did not act rashly. Instead, he followed the others and crept into the nearby bushes to observe carefully.

The number of goblins is not right; there shouldn't be so few.

Sure enough, after observing, Goblin Slayer successfully found the goblins' lair: a burrow beside the river, covered by a huge rock at a very tricky angle. If Goblin Slayer hadn't had special magic, he probably wouldn't have been able to find it.

Once the location of the lair was confirmed, things became simple. Isaac waved his hand lightly.

"superior!"