After stopping Dum, Gu Chongyan quickly made a contract.

As we all know, the contract is the most common tool used by the devil to fool human beings, and the devils like to chew words and play some word traps in the contract book, deceiving people to give their souls or more important things in exchange.

The devils always take pleasure in this, like Doom's mother, as well as the Evil Ghost Rider who is now running in the West and the previous generation of Evil Ghost Riders, etc., all of whom were deceived and toyed with by this method, and were stolen by Mephisto.

However, the contract made by Gu Chongyan naturally would not allow Mephisto to take advantage of the loophole, after all, there were so many teachings between Kama Taj and Hell, and the deal with the demon was not once or twice.

The contract was signed quite harshly, and Mephisto not only needed to return Doom's mother's soul, but also needed to make amends for it, promising to sign a contract with Doom's mother to unconditionally provide her with the magic of the hellish dimension.

You must know, let alone say that it is a Heavenly Father-level powerhouse, even if it is an existence like the Life Court, the power is not endless, and giving a person unconditional strength will more or less affect the total amount of his own power.

Although Mephisto is a Heavenly Father-level powerhouse, providing a person's strength with all his strength will also greatly affect his strength.

Of course, Mephisto didn't want to agree to this condition, but in the face of the surging magic power on Gu Chongyan's body, the dark electricity of Doom's thunderbolt and the soul sword played in the hands of the secret guest, he could only pinch his nose and admit it in the end.

Although he will not die, it does not mean that death has no meaning to him.

With each death, Mephisto loses control of the territory, and as the Lord of Hell, the existence of the territory is the source of his power.

Once the territory is lost, it is not easy to get it back, and the time scale starts at least 10,000 or even 100,000 years.

In comparison, although it is a loss to provide an ordinary witch magic power, the other party only has a hundred years of life, which is not unbearable for the demon.

In addition to this, Mephisto must ensure that he will not allow any direct or indirect coveting of the Infernal Frontier until it has not invaded his territory, no matter what the circumstances.

And even if some non-subjective objective factors cause part of the power of the Hell Frontier to fall into his hands, he must return the Mystic unconditionally, and if conditions permit, support the Mystic to control the Hell Border.

This one is simple, but it also caused Mephisto a lot of trouble, and in the face of the threat of the three, he finally reluctantly accepted this one.

As for the final, information about the River of Souls, Mephisto thought about it and glanced at Gu Chongyan deeply.

"The River of Souls is an unknown river that runs through the multiverse, and it existed before I existed."

"The reason why there is a saying that the end of the river of souls is the source is not because someone has reached somewhere, but because the power of the soul repeats itself, and the end is also the beginning."

"So, I don't know where the end of the River of Souls is, but I can give you a piece of information about the River of Souls, and I don't know if it's useful or not."

At this, Mephistopheles paused, and said something like a proverb.

"In this world, there is only one power that the demon cannot touch, and the river of the soul has the same attribute as that power in the eyes of the demon."

This specious remark made Gu Chongyan frown, and he was about to ask more clearly, when a thought suddenly flashed through his mind.

Wait, the power that the demon can't reach, if he's not mistaken, it seems that there is only one kind of Infinity Stone.

Gu Chongyan's spirits perked up, and his eyes widened suddenly.

Infinity Stones? River of Souls? Soul Gem !!

Could it be that the so-called soul end refers to the soul gem?

Seeing Gu Chongyan's reaction, Mephisto smiled meaningfully and said slowly.

"Young man, His strength comes from division, but he is also constantly seeking to be reunited, which is His inseparable attraction to each other, and you have been in contact with Him so much that He sees in you the hope of reunion."

"So, I don't need to say anything more about the next thing, right?"

Hearing this, Gu Chongyan frowned slightly, glanced at Mephisto, but didn't have much reaction.

However, he understood the deep meaning of Mephisto's words, the Infinity Stones originated from Nemesis, the goddess of revenge, as the power of the foundation of the universe, floating in the universe for countless years, waiting for their destined people.

Infinity Stones have a natural tendency to seek out their kind, and when an Infinity Stone appears, it will freely reveal its existence in the universe, hoping to one day gather with other Infinity Stones.

This may be a rule that Nemesis set for his own revival before his self-exile.

Now, power, space, reality, time, and mind, five of the six Infinity Stones are in Gu Chongyan's hands.

Only the last soul gem, although Gu Chongyan knew its whereabouts, he gave it up because of its harsh acquisition conditions.

Now it seems that he gave up the soul gem, but the soul gem did not give up merging with the other infinity stones.

The Soul Gem is the most dangerous of the six Infinity Stones, as it has some independent self-consciousness and possesses a thirsty soul.

Ironically, however, this gem is essentially the entrance to a small, idyllic and beautiful universe.

Soul Gems can steal, control, and alter the souls of the other party, and can create souls out of nothing.

Gems can not only control the souls of life, but even necromancy can command them, and the huge energy contained in them can even contain the entire multiverse.

If you want to get a soul gem, you can only exchange the soul of your loved one with it, and exchange your soul for your soul.

It's a pity that although the Infinity Stones are good, they are foreign objects after all, except for the Soul Gem and Gu Chongyan's cultivation are incomparably compatible, the other Infinity Stones are not of great interest to him.

Not to mention the harsh conditions of the soul gem, so from the beginning, he didn't plan to look for the soul gem.

Gu Chongyan hadn't thought that this matter would have anything to do with the Infinity Stones, but now that he was nodded by Mephisto, he probably guessed what happened.

Because he didn't plan to exchange the soul gem, the soul gem's shallow self-consciousness took it upon himself, took Su Yan away, and forced Gu Chongyan to exchange it with it.

This is also why, the river of souls, which ordinary lives cannot tread, let Su Yan easily fall into it, and was even teleported to the end of the soul.