Karen received a total of 12.5 billion yuan of collar energy from the ruins.

And with this huge amount of territory energy, he spent 3 billion to transform the undead, another 1 billion, to push the Soul Explorer and Deathwing to the seventh-order legend, another 5 billion to upgrade the level, and finally another 3 billion to evolve himself.

In less than half a month, there are only 500 million of 12.5 billion territorial energy left, and the consumption rate is simply terrifying.

Of course, this amount of territorial energy has not been spent in vain.

Not to mention the territory upgrade, just the 3 billion that Karen spent on herself is definitely worth the money.

As that system prompt sounded, 3 billion territory energy consumption, Karen's body began to undergo huge changes.

At that moment, his heart, which was only the size of a finger, began to beat rapidly, and this heart did not beat once, it would increase by a point, and at the same time, it began to grow slender blood vessels.

These blood vessels spread to Karen's whole body at a terrifying speed, covering Karen's body in a very short time.

Then, on the basis of these blood vessels, flesh and blood began to grow.

Muscles, organs, skin, in just half an hour, Karen went from an undead to a flesh-and-blood person again.

However, before Karen had time to rejoice, his bones began to erupt with incomparably rich death and dark energy, and the horror of this energy was simply unbearable with Karen's newly grown flesh and blood.

Almost instantaneously, the flesh that had just grown out was directly necrotic and rotten until it was all gone, and Karen returned to her skeleton form.

What's even more terrifying is that Karen finds that the strength of her bones is still improving, and her form is also changing.

The already extremely terrifying dark energy was still soaring, and the power in Karen's heart began to retract frantically, and finally all of it retracted and the heart did not dare to extend half a minute outward.

Obviously, in this evolution, Karen has completely lost the opportunity to have a physical body.

And all this Karen is completely powerless to change, she can only watch it happen.

Watching his skeleton slowly grow to a height of five meters, and then slowly compressed to two meters, the color of the skeleton changed from the original snow-white to dark gold.

And it is not only Karen's skeleton that has undergone these changes, but also the companion bone sword in his hand, and the bone armor on his body have also changed, and they have also changed.

Karen could clearly feel that the power in his bone sword was constantly increasing, and the power of the sword that he originally obtained from the ruins was completely devoured into Karen's own power in this evolutionary process.

And the bone armor on Karen's body also changed color to dark gold, and the style changed, directly covering Karen's whole body.

At this time, Karen looked like a warrior in battle armor, and she couldn't see the skeleton in his bone armor at all.

And with Karen's bone armor completely formed, Karen's evolution this time can be regarded as completely completed.

The power of 3 billion energy completely exploded, and Karen's strength officially broke through the seventh order at this time and was extremely terrifyingly improved.

[Ding, your race advancement is completed, you have successfully advanced to a special undead, and your strength has been improved!] 】

……

（？？？ (Karen)

Species: Bone/Cadaver

Strength: Eighth-Order Excellence

Talent: Mark of the Dead (a special territory talent that can mark enemies whose strength does not exceed two of their own ranks through the Mark of the Dead, so as to gain the power to control the opponent's life and death and transform the opponent's form.)

Number of tags currently available: 5)

Lich Heart (Special) (A talent that evolved from fusing the Broken Lich Heart, although it cannot create a Lich Crate, it has a stronger spell amplification ability than a regular Lich Heart.)

It can burn a spell in the Lich's Heart, maximizing the power of this spell.

PS: If you have the Lich Heart, you only need to pay a quarter of the standard price in the transformation of the corpse undead. ）

King of Bones (Special) (When converting bone undead, only a quarter of the standard price is required.)

With the power to control the bones and undead, he can temporarily improve his combat power by condensing the power of the bone undead under his command, or use it to cultivate and improve his strength. ）

Weapons: Sword of the Bone King (Legendary Quality) (Able to increase one's strength by one level!) ）

Equipment: Armor of the Bone King (Legendary Quality) (Normal form can defend against Tier 8 attacks, and Defensive Form can defend against Tier 9 attacks.) ）

……

This is Karen's attribute after evolution, and Karen herself couldn't help but gasp when she saw it.

Powerful, incomparably powerful!

At least today's Karen, there is no existence that can match herself.

Now that he is facing the three of Garo's 'Wind Messenger' and 'Hammer' again, Karen can easily hammer the opponent.

Although Karen is a little frustrated that it still hasn't grown somewhere, it's quite good that 3 billion territory energy can be exchanged for such power.

While Karen was rejoicing in his own strength, several undead who had advanced with him had also completed the advancement.

Since Xiao Lu and the others were all seventh-order legendary strengths before they advanced, their strength has greatly improved after they advanced to the eighth order, and they have basically reached the same level as Feng Kui, although they are not as terrifying as Karen, but they are all eighth-order elite levels.

This made Karen's heart full of majesty as a lord, after all, he had been a lord for so long, and the number of times his strength was stronger than Xiao Lu and them was really not much.

Of course, not all undead are like this, and the iron bone side is very faceless to Karen .

Although it is still in amber, Karen can see through the attribute layout that after the Iron Bone is advanced, it has soared directly from the seventh-order legend to the eighth-order legend, and the combat power has been extremely terrifying.

If Karen wants to fight Iron Bone, even if Karen activates the [Sword of the Bone King], it is estimated that she will still be abused.

After all, although the [Sword of the Bone King] can temporarily increase Karen's strength to the ninth order, it is estimated that it is only the strength of the ninth-order elite at most, and it is impossible for such a force to break through the iron bone defense.

Therefore, Karen finally managed to be strong once, but she still couldn't be the strongest fighter in her territory.

Of course, this wasn't a bad thing for Karen, so he quickly accepted the fact and started to focus on the system prompts.

[Ding, your territory has been successfully upgraded, and the current level is level eight!] 】

【Ding, you have successfully upgraded your territory and obtained the following rewards......】