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

Looking at the green heart in his hand, Isaac sighed softly. The ritual had succeeded, but his experiment had failed.

Instead of increasing his demonic powers as he had expected, the goblin heart transformed into a magical artifact—a magical artifact capable of storing magical energy.

As for its usefulness, it's not entirely useless, but it's not very significant. The magic it contains is at most enough for him to create three Heart-Swapping Rats out of thin air, and then he has to recharge it.

It's better than nothing, I suppose.

Reluctantly putting away the green heart, Isaac sighed, turned and left the basement. The ritual needed to be modified again; he wouldn't give up on this experiment, at least not until he achieved initial financial freedom.

But his knowledge base was insufficient, and he needed to purchase more magical knowledge...

And this requires money...

"Sigh~" Walking up the stairs, Isaac sighed heavily again. He still had to go to the lakeside town to find a job and complete his initial accumulation of wealth.

Of course, you could also reveal your wizard identity to your family in advance and then receive a grant.

But Isaac rejected the idea the moment it came to mind. First, the territory was short of money and couldn't give him much. Second, his sudden transformation into a wizard might give his second brother bad ideas, such as thinking he wanted to seize power, which would be troublesome.

Therefore, at the very least, one should wait until after the witchcraft ascension ceremony before confessing, and first ensure one's ability to protect oneself.

Moreover, even if the family gives money, it's very limited, and in the end, it all comes back to oneself; one still has to rely on one's own efforts.

But the wizard wants to make money...

To be honest, it's a bit difficult...

He hasn't been idle these past few days. Besides studying magic, he's also made several trips to the town in the lake to get a general understanding of the commercial structure of the wizarding world. Well, the richest ones are those that sell raw materials and semi-finished products...

Because wizards are not just researchers, but also producers; the stronger the wizard, the greater their production capacity!

Although the production efficiency is not very high, it is very comprehensive.

Because apart from witches who are born with powerful magic and spells, both legendary wizards and arcane wizards require a certain level of intelligence. Therefore, wizards are basically academic geniuses, and many of them take the all-around route.

Many simple potions and witchcraft items can be made by people themselves, so there is no need to buy them.

Only high-level items require purchase, but Isaac doesn't even have the recipes for those...

Therefore, the most commonly sold items in the lakeside town are various materials and semi-finished products, such as extracted demonic flesh, which many shops and vendors regularly purchase.

Therefore, farming is the only way to succeed!

Unfortunately, I don't have that option...

He had none of it—no technology, no seeds, not even land—so he simply couldn't grow anything...

Perhaps we can try a different approach.

Stepping out of the bedroom, Isaac pushed open the laboratory door, casually placed the green heart on a nearby shelf, then walked to the bookshelf and thoughtfully picked up a document.

The laboratory is no longer as empty as it was when I first arrived. In a cage in the corner, there are three demonized rats, all of whom are Isaac's test subjects to be observed. One of them is a demonized rat with a normal heart that has been replaced. Its condition has improved, and its heart seems to have begun to be demonized, which confirms his guess. However, the degree of demonization is probably not enough, which is why this demonized rat is somewhat lacking in energy.

One is a blood transfusion modification based on this theory—that is, injecting higher-level monster blood.

The blood flowing through this mutated rat is now that of a goblin. Isaac has put a lot of effort into this experiment, because simple injections are not enough. In addition to solving the problem of rejection, he also has to deal with the newly generated blood from the mutated rat.

Fortunately, his cheat code worked as well as ever. With the powerful effects of multiple spells, the experiment was completed and is now under observation.

The third one is a demonized rat that looks like a puppy, with a large bulge in its chest that bounces around. Isaac has replaced its heart with a goblin's heart, so its proportions are a bit off.

Of the three, the most perfect is the blood-transfer demon rat. Although its enhancement speed cannot match that of a heart transplant, it is steady and comprehensive, with far fewer side effects than a heart transplant, and even...

There may be no long-term effects!

However, the specific situation still needs some time to observe. He feels that blood transfusion seems to have a better future than heart transplant!

Because there is a limit to the number of heart transplant surgeries; a maximum of three heart transplants can be performed. After the fourth transplant, the body's rejection function will fail, leading to death.

However, as long as the blood transfusion is digested well, there shouldn't be any problems.

Besides the rats in the corner, there was also a dissected goblin corpse lying on Isaac's operating table. He used it to verify the goblin's body structure, as he had originally planned to try performing a heart transplant on the goblin.

But when he saw the fear in the goblin's eyes, he gave up.

Although goblins are monsters, they are also humanoid monsters and possess a certain level of intelligence. If you ask Isaac to kill goblins, he will not hesitate, even if they are goblin larvae, he will remain unmoved.

But if it's for experimental use...

Isaac doesn't have that determination yet...

After all, he was just a surgeon in his previous life, not a mad scientist.

On the desk lay several parchments with evil magic circles drawn on them, adorned with bloodstains that Isaac had accidentally stuck on, adding to the eerie atmosphere.

However, Isaac himself was used to it, since he was the one who caused it all.

"It seems... this is the only way..." Isaac shook his head, put down his notebook, and made his decision.

Join a wizarding organization!

This is currently the most stable and convenient way to make money, and it will also make acquiring magical knowledge much easier.

Although wizarding organizations do not accept formal wizards, they are referring to formal members. Formal wizards can join as unofficial employees, work for the organization, earn points for the organization, and then exchange those points for knowledge or items.

This is one of the ways most wild wizards make a living, and it is also a process for wizarding organizations to assess newcomers.

So next, I need to think carefully about which wizarding organization to join. This is not something to be taken lightly. I need to consider not only the economic benefits, but also whether my own wizarding path is a good fit.

After all, once I become a great wizard, the wizarding organization I join will probably be this one.

Isaac was a very decisive person. After making his decision, he immediately picked up the wizard's hat next to him, put it on his head, and then quickly walked out of the castle.

……

In the heart of the woods, the old witch was still tirelessly stirring her cauldron. Isaac bowed slightly in greeting before entering the wooden hut behind her and began to examine the recruitment information for the wizarding organization inside.