In Rhodes' opinion, the undead creatures gathered around the periphery of the mansion had already explained to him that there was something unusual about this place, even if he didn't count the other surrounding environments, Rhodes could confirm this.

Out of his own considerations, Rhodes did not choose to convert these undead creatures into an average amount of experience points, but directly controlled them through the existence of spiritual imprints.

In Rhodes's perception, these low-level undead creatures, due to their relatively weak soul fire and low overall strength, did not produce all kinds of their own wills like those special undead creatures, so they could not resist the spirit imprint in any way.

Under the effect of his own spiritual imprint, Rhodes did not spend much effort, and easily controlled the undead creatures that existed around him.

Due to the low rank, although these undead creatures are easy to control, in Rhodes's opinion, once something really abnormal, the strength of these undead creatures is naturally difficult to have any effect, and there is no need to expect these undead creatures to play any miraculous effects in battle.

Rhodes' plan is to use the presence of these undead creatures to detect possible dangers in advance, so that he can respond in time, so as not to wait for the threat to come to his side before noticing it.

With Rod's movements, when he finally stopped in front of the gate of the mansion, all the low-level undead creatures around him had been completely controlled by Rhodes, and Rhodes was also able to give various instructions to these undead creatures through the existence of spiritual imprints.

What made Rod feel a little concerned was that when he controlled these low-level undead creatures through the casting of the spirit mark, through the effect attached to the spirit mark, Rod could feel an unusual aura from the surrounding undead creatures.

According to Rhodes' understanding, judging from the appearance of these undead creatures, as well as the vampire who led the way before, after seeing these undead creatures, he did not feel any surprise, and these low-level undead creatures are likely to have existed in the city of death for a long time.

Due to the small number of necromancers in this place, Rhodes believed that it was obvious that the one who could transform a large number of low-level undead creatures should not be the necromancers in the city, but something else.

The Soul Tower that exists in the city undoubtedly played an extremely crucial role in this process. In Rhodes's opinion, it was precisely because of the existence of the Soul Summoning Tower that these low-level undead creatures were passively transformed, and finally began to wander around the city due to the lack of necromancer's control.

Under the effect of the Conjuring Tower, a large area centered on the City of Death will actively transform the corpses of creatures in it, even if there is no necromancer, this can be achieved very well.

Regarding the appearance of these undead creatures, Rhodes, who knew enough about necromancers, attributed it to the existence of the Spiritualist Tower through his own judgment.

In addition to the existence of these undead creatures, what made Rhodes feel extremely concerned was that he could still feel a very unusual aura from the undead creatures under his control.

Rod noticed that this phenomenon did not occur only in individual undead creatures under his control, but in almost all undead creatures.

Rhodes found that compared to other regular undead creatures, the undead creatures he controlled around the mansion at this time contained an extremely powerful death energy, far beyond the level that this group of undead creatures could touch.

Due to the existence of this death energy, it has long been integrated into the overall aura of the undead creatures, and even Rhodes cannot directly make any changes to this death energy, let alone other necromancers.

Without the keen perception of death energy like Rhodes, coupled with the fact that the number of necromancers is extremely small, this may not be noticed by other necromancers at all.

It was also the appearance of this death energy that made Rhodes have a trace of doubt about the origin of these undead creatures, in Rhodes's opinion, the undead creatures with this pure death energy in their bodies, their corresponding ranks, obviously should not be like this.

Rhodes realized that the purity of this death energy was not much different from what he had transformed through his legendary spiritualism, and it was even more intense.

Among them, of course, there are also reasons why Rhodes did not perform the Endless Long Night Ritual, and it was difficult to bring out the true effect of the legendary spirit conjuring, but it could also prove to Rhodes the purity of this death energy.

This discovery made Rhodes understand that the existence that can release this level of death energy, his true identity is obviously not simple, and the purpose of his doing so, Rod is also unknown.

Rhodes noticed that the most special death energy that existed in the bodies of these undead creatures had become an extremely stable form of existence, but it was currently hidden in a hidden position in the bodies of the undead creatures, and it had not yet had any effect on the undead creatures themselves.

If he hadn't sensed the existence of this special death energy, Rhodes would not have thought that these undead creatures under his control would have such a special feature.

Through his own knowledge of undead creatures, as well as his knowledge of necromancers, Rhodes understood that once the death energy in the bodies of these undead creatures began to take effect, according to its hidden position in the bodies of undead creatures, it would raise the rank of the undead creatures themselves by a notch in a very short period of time.

Relying on the existence of these death energies, Rhodes believed that the original low-level undead creatures would become higher-level existences in a very short period of time.

From the death energy in the bodies of these undead creatures, another thing that Rhodes discovered also confirmed Rode's conjecture.

Thinking back to the things that could directly raise the rank of the undead creatures, in Rod's impression, there were not many such ways in the entire Diya territory, not to mention the extremely pure death energy that Rhode felt from these undead creatures at this time.

Rhodes suddenly realized that Sandru, who was in the city of death at this time, had an artifact in his hand that had such an effect, which could ignore the restrictions of the undead creatures themselves and forcibly raise them to the level of the fifth order.

Recalling that the appearance of these undead creatures should have been done passively under the effect of the Spiritualist Tower, coupled with the fact that Sandru was already on top of the Spiritualist Tower, Rhodes undoubtedly realized something.