The core of elemental creatures was their soul. Thus, the soul of an earth elemental was required to create a clay golem.
Elemental souls were very difficult to obtain. Normally, the elemental creatures summoned by summoning spells were only the projection of their souls combined with the spell's power. Even if they were killed, their souls could not be taken.
To obtain an elemental soul, one had to go to places where elemental creatures lived.
There were some cracks in the prime material plane that led to the elemental planes. Sometimes, elemental creatures would barge in, but these cracks were usually the exclusive property of powerful magic organisations. A rogue mage like Feng Chou could not touch them.
Of course, one could also buy them with money, but the high price would make the golem more expensive. It was better to just buy the finished product.
However, since Feng Chou planned to make golems, he had naturally considered where to obtain elemental souls.
Compared to the prime material plane, the gods had strict control over souls. In the abyss, hell, and other lower realms, souls were sometimes equal to money.
The demons and devils of the abyss and hell coveted the souls of the prime material plane all day long. They also coveted the high-quality souls of the elemental planes.
In the abyss and hell, there were enough powerful existences that went to the elemental planes to hunt for souls.
Thus, if one wanted to buy souls, it would be right to find a devil.
After a simple ceremony, the projection of a centaur appeared in the binding room of the laboratory.
The centaur looked around and bowed slightly to Feng Chou, "Viscount Morpheus of Hell pays his respects to you. May I ask how I can be of service to you?"
In the strict hierarchy of hell, a title was the best way to identify a devil's strength. A viscount meant that this centaur had the strength of a quasi legend.
Of course, a quasi legend of a devil was different from a human quasi legend. A devil with a strong body and many spell-like abilities could even solo a small battle team of humans of the same level.
Therefore, when people described the levels of powerful creatures such as demons and devils, they liked to use the concept of Challenge Level. For example, a Challenge Level 20 referred to the need for a team of Level 20 professionals to be able to defeat such an opponent.
Feng Chou didn't waste any more words. He directly handed the other party a list and said, "Name your price."
Morpheus took the list and looked at it. He raised his eyebrows and muttered, "This is a big deal."
He quickly browsed through the list, looked up at Feng Chou, and asked, "What do you want to pay with?
I don't accept gold coins. "
Feng Chou stretched out his hand and opened it in front of Morpheus. There was a soul crystal the size of a pigeon egg in his palm.
Seeing this crystal, Morpheus raised his eyebrows and calmly said, "Not a bad soul crystal. Hmm … it contains the soul power of 10 people. It's worth … 10 Disaster Coins."
Upon hearing this, Feng Chou raised his hand and was about to cancel the summoning spell.
Morpheus hurriedly said, "Hey, hey … why are you so impulsive?
How about twenty Calamity Coins … Okay, okay, fifty?
… Damn it, stop … You win, 100 Calamity Coins, that's the market price. "
Feng Chou withdrew his hand that was about to cancel the summoning spell. He turned around and picked up a thick contract from the lab table and handed it to Morpheus.
Morpheus took the contract and quickly browsed through it. In the end, he looked up at Feng Chou with some surprise.
What surprised the centaur was that the contract's logic was seamless and did not leave any loopholes for him to exploit.
Morpheus looked at the contract in his hand, thought for a moment, and nodded.
Demons were experts at playing with contracts. Of course, Morpheus could see that there was no problem with this contract. According to this contract, after he delivered the goods, if Feng Chou went back on his word, then he could use the soul contract to forcefully harvest Feng Chou's soul with the help of the power of hell.
Unless Feng Chou had a god behind him, even a legendary wizard would not be able to resist such a harvest.
After both parties signed the contract, with the help of the projection, Morpheus' main body quickly built a teleportation gate to cross dimensions. Of course, according to the contract, the construction of this teleportation gate would be strictly monitored by Feng Chou. This teleportation gate could only teleport existences below the mid-grade, and it could be interrupted by Feng Chou at any time.
Soon, pairs of Barbazas carried large, heavy boxes through the portal and arrived at the binding room.
These mid-grade demons put down the boxes at the place Feng Chou pointed out and ran back to the portal.
A few minutes later, dozens of large boxes were piled up in the corner of the binding room.
Seeing the portal slowly close and disappear, Feng Chou's anxious heart finally relaxed.
Although he had the Book of Devils from the broken arcane tower and knew how to deal with devils, and he also had the spirit of the Cosmos Tower to fill in the gaps and not make any mistakes, devils were after all the most cunning existences in the world. No one could be sure that they would not be deceived by devils. Once he was deceived, Feng Chou would have to face a terrifying quasi-legendary level devil. He could not help but feel nervous.
Fortunately, demons were not demons. They could not find any loopholes in the deception, and had no intention of flipping the table.
Feng Chou pretended to check the boxes and pointed out some of the fakes.
In reality, these boxes had been completely scanned by Qiankun Pagoda as soon as they left the portal.
Morpheus did not blush in the slightest when Feng Chou pointed out the fakes. He contacted his main body again and sent over seven or eight boxes of real goods to complete the list of goods.
After checking the goods again, Feng Chou nodded at Morpheus' projection, expressing his approval.
Next, he took out a silk pouch containing more than a hundred soul crystals and handed it to Morpheus.
Morpheus took the pouch and checked the quality of the soul crystals. He bowed slightly to Feng Chou and disappeared.
Having completed the transaction safely, Feng Chou could not help but let out a long sigh of relief, wiping the cold sweat from his forehead.
In this transaction, Feng Chou had not only bought a batch of mid-grade earth elemental souls, but also a large number of alchemy materials produced in the lower planes, as well as a large number of mid-grade demon corpses.
Alchemy materials produced in the lower planes were rather expensive in the prime material plane. Normally, they could be sold at several times the price.
After the corpses were processed with necromancy spells, they could be used to make bone golems.
After obtaining the earth elemental souls, Feng Chou began to experiment with making clay golems.
The creation of clay golems was very simple. The key was the modulation of 'clay'.
Modulating 'clay' was not just a matter of mixing a dozen alchemy materials. In fact, the process of modulating these materials was a process of holding an exclusive magic ritual.
This ritual was divided into two parts. The first part was to modulate a special magic oil.
After modulating the magic oil, various solid materials would be added in a fixed order.
During the modulating process, not only was the order and speed of the addition of materials strictly regulated, the process also involved the casting of a dozen auxiliary spells.
The slightest mistake in the process would result in the materials being scrapped.