As his strength increased, the number of souls Roy obtained gradually increased, but in the same way, the consumption also became more.

After spending more than 1,400 souls to create his own demonic weapons, Roy's remaining souls were less than 800, of which 600 were high-quality souls taken from Cizer, and all of them were used by Roy to make essence magic energy potions.

Thanks to the Essence Magic Elixir, Roy's magic power rose much faster than other demons, and after six hundred souls were made into magic potions, a total of 712 points of magic power increased to Roy.

It seems that this kind of high-quality soul is the best for refining magic potions.

After breaking through 1,300 points in his mana, Roy also successfully reached the level of a mid-level demon, and after he doubled his mana, he would be able to become a mid-level demon, and at that time, he would need to march to the level of an upper-level demon.

However, it is not always possible to encounter such a good thing as Cezel, so Roy estimates that it may take a lot of time for his magic to double again.

With the surge of magic power this time, the magic nodes in Roy's body also increased again, almost all over his body, the operation of magic power was more smooth, and the frost power of the darkest cold could be released from almost any part of Roy.

Even if Roy didn't deliberately use his magic power now, it would cause his exhaled breath to carry a cold white mist.

Even the place where he lived was often covered with a shallow layer of hoarfrost, and many bryophytes withered because of it, all of which were caused by the cold that Roy had escaped from his daily life.

Roy was also a little confused, he thought that his magic power was growing too fast, and he hadn't been able to adapt to this power, causing his magic power to spread out unconsciously.

But in fact, Roy misunderstood, the world's impression of the abyss of hell is all magma and flames, not without reason, that is because in this world, it is really difficult to produce a cold environment, among all the elemental demons, the number of frost demons is also the rarest, so the average frost demon will find a way to create a suitable living environment for himself.

Roy's cold leakage was actually caused by his body's instinctive desire to transform the surrounding environment! As long as Roy stays in one place for a long time, over time, the magma and flames in this place will subside, and all plants that prefer hot environments will die, creating a withering and cold winter environment.

And in this transformation, the frost power of the frost demon will also become more and more powerful because of the continuous resistance to high temperatures, which is why the frost demon will be the nemesis of most demons, it is precisely because in the abyss world suitable for fire, the frost demon has a difficult survival, so it has also practiced the frost power of ultra-low temperature.

When Roy finally realized this, he let this cold escape phenomenon go freely, and for this reason, he also specially built a thermometer through the system to test the temperature of his frost power.

He found that the minimum temperature of the frost power he now controlled could reach about minus 70 degrees, which was almost the temperature of the south pole of the earth.

And such a low temperature is just the temperature at which he releases his magic power smoothly, and once he explodes with all his strength, this temperature may be even lower.

As a result, Roy also began to look forward to it, and he didn't know if he would be able to achieve a low temperature like absolute zero in the future, huh...... Maybe it's unlikely, because absolute zero is almost the theoretical limit of temperature, and the Frost Demon's bloodline may not reach this step, but it doesn't matter, he may be able to define creation through the system.

Although Roy guessed that the souls consumed to define absolute zero were absolutely terrifying, it was still a thought, wasn't it?

When Roy was transforming his living environment, one of the benefits of this was that few demons were willing to approach his dwelling place anymore, because the temperature here was abnormal, and the demons who liked the heat would subconsciously avoid it, and Roy had many fewer opponents who coveted his territory.

In other words, in the future, he will basically only hit other demons, and no other demons will hit his door......

Fortunately, Roy's cold air is not an unlimited reduction in the environment of the place of residence, otherwise, Fat Tiger may be in trouble, although he also has a head that is ice attribute and can withstand cold, but the other two heads are fire and poison, so when Fat Tiger is by Roy's side now, these two heads are always sleepy and want to sleep.

As a last resort, Roy had no choice but to let the fat tiger go out to play by himself, and now that it has fused with Hellfire, ordinary mid-rank demons can't move it......

Time passed day by day, and Roy usually stayed in his residence to work on scheme design, except for going out to hunt souls.

Among the rewards given to him by Aedrah, there are three fallen souls, in line with the principle of not wasting, Roy used these three souls to complete a dynamic skill design, considering that he has no long-range attack ability, Roy naturally designed a long-range attack skill.

This skill, named [Frozen Slash] by Roy, was released with the help of his demonic weapon, Frostmourn.

When wielding the Frost Grief, Roy injected his magic power into it, and used the process of swinging the sword to release a crescent-shaped frost sword aura, which flew very fast, and once it hit the target, it would immediately freeze the target.

This skill, with the amount of magic injected, the flight distance is also far and near, but generally speaking, about 50 points of magic power, can already fly a distance of about 300 meters, which belongs to the kind of low-cost practical skills.

In addition to this skill, Roy also redesigned his Demon Wings, adding some patterns like demon text symbols to his Demon Wings, which were intended to carry the Fear Aura.

The fear effect of the Nightmare Eye, Roy found it really useful, so now he plans to expand the scope of use of this fear effect, when the demon symbol on the demon wings lights up, it means that the fear aura is activated......

After the completion of these two design plans, Roy's soul was completely depleted, but in this more than a month, Roy's cooldown period was almost over, and he could go back to the other world to obtain his soul.

However, before Roy could leave, on this day, the fat tiger who came back from playing outside brought back something strange to Roy.

It was a black stone, looking like a lava rock formed by the cooling of the magma, and when Roy picked it up, he realized that there was a golden mineral inside where the stone had cracked.

"This is...... Gold!? Roy was a little surprised, and with two paws, he peeled off the outer wrapping layer, and found that it was really a piece of gold inside!

The shape of this gold is very irregular, with a lot of raw edges, and it looks like a piece of naturally formed dog's head gold, but the strange thing is that in Roy's eyes, this gold not only has a golden color, but also a faint black gas mixed with this gold!

However, Roy didn't find any special magic on this gold.

"Strange, what is this black gas?" Roy was a little puzzled and asked Fat Tiger, "Where did you find this thing?" ”

Fat Tiger snorted at Roy, turned his head and ran outside, Roy followed from behind, and as a result, Fat Tiger took him, ran a long distance, was out of the range of his territory, and finally came to a strange mountain range.

This mountain range, full of hideous and raised sharp black rocks, as if the bone spurs of the mountain stretched out, the fat tiger and Roy walked through these sharp rocks until they reached a hole halfway up the mountainside.

This hole is not big, the fat tiger easily got into it, Roy had to retract his wings and shrink his body, after getting into the hole, he walked a long distance, and Roy found that a golden light suddenly came from ahead.

When he came to the exit, Roy was stunned!

This is a very large cavity in the interior of the mountain, and what you can see is a sharp rock with interlaced canine teeth all over the top of the cavity and the ground, but among these rocks, there are a lot of golden lights dotted with stars!

Gold! It's all gold! This is an open-pit gold mine!

Almost all the gold here is in the form of gold nuggets, they are wrapped in thick or thin rock formations, and just the gold that is inadvertently exposed has rendered the hole full of gold, which shows the sheer number of them.

For demons, gold is worthless, because demons don't use gold as currency at all, so even if there is a gold mine here, no other demons come here, so this gold mine can be said to be very well preserved, Roy suddenly saw so much gold, naturally felt dizzy.

In particular, how good it would be if you could find such a gold mine when you were a human being in your previous life?

Roy couldn't care about anything else, so he hurriedly called Fat Tiger for help and asked him to help him dig up these gold mines, a demon and a dog, and worked for more than an hour to dig out about a ton of gold mines.

In order to get the gold ore out, Roy had to widen the hole where it had been entered, and finally used the system to make a large woven bag to pack the gold ore and pull it out.

Returning to his residence, Roy had Fat Tiger carefully spew out hellfire to smelt the gold ore.

In the end, he got several large irregular gold ingots, more than 500 kilograms.

However, what puzzled Roy was that when so many gold ingots were put together, the black gas emitted from the gold in his eyes became more and more intense.

"What the hell is going on? Why does all gold carry such a black gas? Roy was puzzled: "This black gas, it can't be something ominous!" ”

Roy didn't know that the gold he had dug up at the moment had a specific name in the abyss world.

Demon Gold!

If you take these demonic gold to other worlds, then in the eyes of people in other worlds, you can't see these black gases, and only demons can see them.

This black qi is actually a special power, and the demon is not affected, but once the people of other worlds get these demon gold, they will continue to be sucked away by the power of the black qi...... Luck!

Demon Gold, also known as Doom Gold!