Although I didn't get the answer I wanted, I had a very vague direction. The next thing I had to study.

After finishing the arcane class, Klein returned to his dormitory. He could only go step by step on the arcane theory research. What he urgently needs now is to improve his hard power.

There are no synthetic items in a few days, so I call up the synthesizer. Now, the environment should be considered safe and it is time to start developing steadily.

This time, Klein did not synthesize ordinary items, but took out two necrotic particles from his arms.

After putting the undead particles into the synthesizer, the prompts obtained are different from ordinary items.

【Synthetic Materials: Necrotic Particles (First Level) Necrotic Particles (First Level)】

[Probability to obtain first-order or second-order materials, and very small probability to obtain special materials]

"Materials? The probability of first order and second order is the same. If the first order appears, it is equivalent to failure. There is a very small probability that special materials, special materials, and what is it?"

"synthesis."

【Composition, please wait, 5, 4, 3, 2, 1】

【You have obtained a new item: Necrotic Crystal (Second Level)】

Fortunately, it’s enough if you succeed, the second-order materials should be much more expensive than the first-order ones.

He picked up the undead crystal, which was his second undead crystal. Klein took out another undead crystal in his arms and compared it.

The synthetic undead crystal is more full and darker. It is obvious that the quality is better than the Hector.

"Sure enough, the function of the synthesizer is far more than just synthesising strange objects."

Looking at the Necrotic Crystal, Klein smiled with satisfaction and prepared to go downstairs to spend some time at the shops in the Royal College.

In the next practice, he needs to prepare some basic materials.

Basic materials can be purchased in the school's internal shops, and high-end materials must be found in various chambers of commerce in Terrera.

"Psychic ink, magic paper, test stand..."

"It's almost done."

After a simple consumption, Klein returned to his dormitory with a large bag of materials.

He knows how to create food and water, and even if he doesn't go out, he won't starve to death. Therefore, the time for hard work is here.

—————

Time flies, and it takes more than a month.

For more than a month, Klein has been studying the deceased letters alone in the dormitory, and has reached the point of forgetting to eat and sleep.

Although the arcane course was not lost, it did not take so much effort.

He has a good knowledge of basic magic theory. He originally thought that practicing undead spells would be a natural result.

But in actual operation, reality gave him a loud slap. He has never succeeded in more than a month.

The various materials consumed during this period were very huge. He had consumed 4 bottles of psychic ink alone.

This kind of ink is a medium for psychic summoning, and the price is quite expensive. A bottle costs 25 tyres, which ordinary people cannot afford.

Becoming a strong professional, talent, hard work, resources, mind, opportunity, and lacking, can't achieve anything.

In the eyes of many people, it is just a fool to practice psychic summoning in more than a month.

If it is passed into the ears of the necromancer, I am afraid it will only be said that Klein is blaspheming the undead magic.

However, Klein has made great progress this month. From the beginning, even the magic pattern was wrong, to now, the whole process has only failed with a little flaw.

He felt that he was about to succeed.

Drawing the last stroke of the magic pattern in the palm, Klein clasped his hands tightly and recited a magic spell at the same time.

"Psychic Summon!"

Klein's eyes burst into gray energy, which gathered throughout the room.

Klein kept pouring magic into the aggregation point, "Buzz!" A door to the underworld opened in front of Klein's palm.

The dark colors, the breath of death.

The white skeleton slowly walked out of the door, stiff and weak.

After the skeleton walked out, the gate of the underworld was closed again.

A spiritual connection similar to a clever pen appears between Klein and the skeleton.

"Finally, it worked."

It took such a lot of effort to summon an ordinary skeleton warrior. In the eyes of many necromancers, it is not worth the effort.

Because the Necromancer Summoning is not just a kind of spiritual world, but also a corpse, and the difficulty is much smaller.

Even if you don’t choose to kill people, the body can be purchased from some official institutions. Although this practice has always been boycotted by some justice people, such as Paladins.

But this practice has always existed.

Klein could not find the corpse at school, nor did he want people to know that he knew necromancer spells, so if he wanted a skeleton, he could only perform psychic summons.

Summoning skeletons in this way is expensive, and not only does it require spiritual ink to draw magic circles.

Moreover, after summoning the Gate of Underworld, whether or not you summon a skeleton, you must sacrifice a deceased particle.

"The price of the necrotic particles is too expensive, and one piece costs 30 tyres a high price."

However, everything is worth it.

Klein turned on the synthesizer and called out the interface of soul extension.

【Absolutely Summoned Undead, Yes/No Skeleton Body Strengthening】

"Perform bone strengthening."

【Strengthing, please wait】

The skeleton that had no easy summoning in front of Klein shattered and turned into pieces of small bone scum.

These small bone slags formed a floating bone line and drilled into Klein's spine from the back.

The severe pain came at the same time, causing Klein to fall to the ground.

Beads of sweat dripped from Klein's forehead. He lay weakly on the ground, and the surrounding floor was already wet with his sweat.

"Drink!" Klein tried to keep his voice down, he didn't want to attract other people's attention.

The reason for such pain is also because Klein's physical condition is too weak.

He has to endure the body that others can cultivate for several months or even years in a short period of time.

The process of strengthening the body is so painful, but he only concentrates all the pain time.

...

【Skeleton Warrior Strengthening Completed】

【Your physique 2 has been improved to 2.8】

【Your Power 2 is increased to 2.7】

【Your Agility 1 is increased to 1.8】

Klein was sober, but he never moved.

The reinforcement has been completed for a while, but it is still lying on the ground.

He was very happy with the greatly improved attributes, but Klein still wanted to lie on the ground.

For nothing else, he just felt that this would make him feel a little more comfortable.
Chapter completed!