As the bone dragon absorbed the energy of death, there were also a lot of changes in its body.

At the beginning, although it absorbed a lot of death energy, the bone dragon still maintained its original state. When it was first resurrected by Rhodes, there was no change in its body, and its appearance was still a complete dragon skeleton, but due to its own might, it contained great power in its body.

However, in the current situation, after absorbing the death energy released by Rhodes, a layer of netherworld mist condensed by strong death energy began to appear around the bone dragon's body.

Although the Nether Mist has not yet enveloped the entire body of the Bone Dragon, it is only a matter of time before it is completely enveloped at the current trend.

The court mage saw this scene in his eyes, and for the first time a feeling of shock arose in his heart.

The court mage sensed that with the absorption of death energy by the bone dragon, its strength had obviously undergone a qualitative change. At this level, the court mage was already able to sense an absolute threat from the bone dragon.

The court mage understood that this happened obviously related to Rhodes behind the bone dragon.

Rhodes was able to release a rich amount of death energy, which even the court mage felt was very rare when he saw it.

In this case, if the court mage took the opportunity to attack Rhodes and the bone dragon, then there was still a chance to delay the time for the bone dragon to ascend, but because the court mage had been guessing about Rod's strength in his heart, he missed this last chance.

At this time, with the release of Rhodes' death energy, the strength of the bone dragon has been greatly improved.

Unlike ordinary undead creatures, if Rhodes releases a large amount of death energy to other undead creatures under his command, in addition to using it to recover from injuries on his body, they will also not be able to absorb these death energy quickly, but it will take a lot of time to do so.

However, for the bone dragon, because its own potential was not fully realized, under the condition that Rhodes provided a large amount of death energy, the bone dragon could absorb it instantly, and even directly improve its own rank.

With the absorption of death energy by the bone dragon, the spiritual attribute occupied by the bone dragon has exceeded 45 points, and the speed of improvement has not slowed down.

At this time, the bone dragon was releasing a powerful netherworld aura all over his body.

In the previous time, due to Rhode's own attribute limitations, he could not control the bone dragon after the strength was improved, but after the rank was raised, Rhode's spiritual attributes were greatly improved, and he was able to control stronger undead creatures.

Therefore, Rhodes did not hesitate to consume a lot of mana, hoping that the bone dragon after improving his strength would be able to defeat the court mage in front of him.

On the side, seeing this happening, the court mage seemed to have thought of a plan to deal with Rhodes and shot at Rhodes again.

At this time, with the movement of the court mage, a vine suddenly appeared under Rod's feet, and the vine directly wrapped around Rod's feet, making it difficult for Rod's to move for a while.

Under the spell of the court mage, Rhodes was held in place by the vines. And the court mage in front of Rod's line of sight flashed at this time, and his original body suddenly disappeared and appeared in another direction.

The court mage knew that according to his current mana status, he could not solve the bone dragon in front of him, and Rhodes seemed to want to block the bone dragon in front of him as a shield, so that his spell could not work.

Realizing Rod's thoughts, the court mage immediately had a countermeasure.

At this time, the court mage directly crossed the shield of the bone dragon and appeared behind Rod.

As the court mage raised his hand, a large number of ice arrows shot towards Rhodes' position, and Rhodes was unable to dodge because he was held in place by the vines.

Seeing the ice arrow shooting rapidly towards his position, although he couldn't dodge, Rhodes's face didn't show any panicked expression, and even the action of releasing death energy in his hand didn't change at all, and he didn't seem to take the palace mage's attack seriously.

Just as the ice arrow was about to hit Rod, the bone dragon behind Rod's body suddenly moved.

The bone dragon's body moved, and he quickly protected his bone wings in front of Rod. Rod saw that the bone wings of the bone dragon were already covered with a layer of pale netherworld energy at this time.

Netherworld energy is essentially beyond ordinary death energy, and Rhodes is also able to get a sense of homogeneity from Netherworld energy due to his level of spiritualism.

Under Rod's gaze, the ice arrow struck the bone wing that shrouded him. Due to the influence of Netherworld energy, the ice arrow did not produce any fluctuations, and it dissipated directly.

In previous battles, the court mage had demonstrated the power of ice arrows on several occasions, and neither Rhodes nor vampires could withstand the damage caused by ice arrows.

But at this time, in the face of these netherworld energies on the bone dragon's body, the ice arrow could not produce any effect, as if it had encountered the existence of natural restraint on it. Under the influence of the netherworld energy on the bone wings, these ice arrows dissipated without even making a sound.

Seeing this scene in his eyes, Rhodes knew that compared to ordinary death energy, nether energy was obviously more powerful. If compared according to the biological rank, the Nether Energy must be possessed by undead creatures of the sixth order or above.

At this time, Rhodes had stopped releasing death energy, and just looked at the court mage in front of him.

Seeing the changes in the bone dragon beside Rod, the court mage showed an expression of disbelief.

For a court mage who has seen too many things, it is rare to have such a big mood swing, and the reason for the mood swing is obviously that the strength of the bone dragon is beyond his expectations.

Rod knew that through his own examination of the spiritual imprint, the bone dragon at this time had already reached 52 points of his spiritual attribute, that is to say, the bone dragon had officially entered the sixth order level.

After releasing the death energy, Rhodes' mana was only the last point, and this was only when Rhodes got the necromancer's bonus to spiritualism, which completed the transformation of the bone dragon.

At this time, the bone dragon has changed greatly from what Rod originally saw, and the bone dragon's whole body is shrouded in more powerful nether energy, and the nether energy is beside the bone dragon, bringing extremely strong power to the bone dragon.

Under the effect of netherworld energy, the entire body of the bone dragon seemed to become illusory. Rod knew that the bone dragon at this time, due to the improvement of the rank, could already be called a ghost dragon.

The spells cast by the court mages could not even break through the basic netherworld energy that surrounded the ghost dragon.