Improvements to the spirit imprint have always been the focus of the necromancer's research. This way of directly controlling undead creatures in disregard of the existence of the original spiritual imprint is very attractive to any necromancer.

Unfortunately, since the Necromancer appeared and used the spirit mark that the mage originally used to control the golem to control the undead creatures, the form of the spirit mark has not changed in any way.

Until now, the mental imprints used by necromancers to control undead creatures are no different from the mental imprints of ordinary mages controlling golems, perhaps the only difference is that the spiritual attributes occupied by golems are generally lower than those of undead creatures of the same rank.

Even though many powerful necromancers have been searching for ways to change their spirit imprints and find ways to directly control the undead creatures under the hands of other necromancers, they have not been able to make any progress.

Even the Death Knights relied on their own will to get rid of the control of the spirit imprint, which had little to do with the way the rest of the necromancers did.

If it were the rest of the necromancers, in Reese's current position, they might not be as excited as he was, and they wouldn't have any thoughts about this death knight, but Reece was obviously different.

Maybe the rest of the necromancers didn't understand, but Reece knew very well in his heart that he knew a secret method that could control the death knights who had been controlled by other necromancers, and convert the spirit mark into his own use.

This secret method of controlling the Death Knight was not something Reese had studied, but he had discovered in a book.

Reece recalls that when he had Elon's support and was studying spells in Silvercliff City, he had read the books that Elon had collected in his mansion, where he was now.

In the process of reading these books, Reese noticed that among these books, there was a very special existence.

The first half of the book is a history of necromancers. Whether it is the heyday of Bracada, the first appearance of necromancy, or when the necromancer was expelled by magic, there is a clear record of the establishment of Diya in the books.

Compared to the large number of books on spell-casting techniques that Elon had collected, this book that recorded the history of necromancers undoubtedly left a deep impression on Reese.

Reece didn't expect to be able to learn about the history that had long been forgotten by the mages from a book that Elon had collected.

In the territory of Bracada, nothing about necromancers is allowed to circulate on the surface, let alone such a book that records the history of necromancers.

Rees didn't know where Elon had collected the book, but based on Reese's reading of the book, Rees confirmed that the history recorded in the book was not the work of ordinary bards, but the experiences of necromancers.

Reese, who is a necromancer, can naturally understand how valuable this book is. Such a book that chronicles the history of necromancers will undoubtedly attract mages who are interested in necromancers in Bracada.

Through reading the books, Reece discovers that the history recorded in the second half of the books has shifted from the whole part of the necromancer at the beginning to a great battle that took place in the territory of Dia.

Originally, Rees had read the war in the book as a story, just like the bards had told it, but when he got to the end of the book, Rees clearly found that something was wrong.

Rees noticed that in the last pages of the book, there was a secret method. According to the records in the books, this special secret method can allow the necromancer to forcibly control the death knights of the rest of the necromancers, and replace the spirit mark that the necromancer originally set for the death knight with his own.

At the same time, Rees also noticed that this secret method also appeared in the contents of the books, and played an extremely crucial role in the direction of the war in Diya.

This discovery undoubtedly shocked Reese, who did not expect that he had originally read this book with the mentality of knowing the history of necromancers, but he could get this kind of secret method from the content recorded in the book.

After reading the book, Rees did not doubt the feasibility of this secret method, and the things recorded in the book had already convinced Reese of the existence of this secret method.

Realizing this, Reese's first thought was to hide the secret of the book from any other mage, and at the same time, Rees also had the idea of keeping the book for himself.

For this reason, Rister deliberately selected many books from Elon's collection that did not involve spells, but only books about the history of Bracada's territory, as well as books on the changes of lords in various regions, and asked Elon for them many times in the name of exploring the history of Bracada.

At first, Elon would also suspect that there might be some important information in the books selected by Reese, and before handing over the books to Reese, Elon would deliberately check them, but after many times, Elon was not on this at that time, but thinking about how to complete the transformation of gods and monsters.

As for the books that Rees was asking for, since there was no important information in them, and Elon himself was not interested in history, he did not check the books that Rees was asking for.

In this way, Reese eventually brought the book of the history of the necromancer out of Elon's mansion.

At this time, this special book is in the space ring of Reese.

After learning about the effects of the secret method described in the book, Rees also did a lot of research to get more information about this secret method.

Through the collection of intelligence, Reece learned that even the high-level of the Spirit Society, even the powerful necromancers in Diya, did not have the ability to control the death knights who already had spiritual imprints.

After understanding this, in Reese's heart, the preciousness of this book is naturally a little higher.

Even Reese, who had mastered this unique method, didn't understand how difficult it was to make changes to the spiritual sigils cast by other necromancers.

Even the most powerful necromancer who has been studying this cannot make any form of change to the existence of the spirit mark, but the content recorded in this book clearly states that it can change the existence form of the spirit mark to directly control the undead creatures.