An example can be found in the conundrum of cloning. If you make a clone from your body, what you get is only a body made compatible with your soul. If you attach your consciousness to this clone, it will be able to merge perfectly with the body and you will be able to control the clone as if it were your original body.
The problem with this method is that the death of the clone will injure your soul. To fix this problem some people split out a fragment of their soul, which is a very painful process, and then stuff that soul into the prepared body. This option truly solved the injury to the soul issue after the death of the clone.
But this creates another problem, this clone will later gain its consciousness and identity. It would not believe it is a mere clone anymore, and, in most cases, the clone would try to absorb the main body to become whole. This problem is caused by the production of a new origin. The split soul will produce a new origin and this will give it a new identity. The only way to fix this issue is to share your origin connection with the split soul which aggravates the pain you feel during the splitting process and it would also make you feel constant distress in your soul because of the loss.
Some people still use this method as an unorthodox method to gain power. They will allow the split soul to accumulate power then initiate a fight for supremacy with it. The one that wins will absorb the essence of the other to grow. It is just that for it to be a significant increase the split soul must grow to almost the same level as the main body.
This increases the risk of losing to the split soul, either this or it would not be worth it to go through the effort of splitting the soul, creating a compatible body, and raising the clone for slaughter. Only a truly strong soul can allow such an endeavor to be worth the effort.
Some people have envisioned that the only way to create a truly harmless and loyal clone is to split a fragment of the origin. This fragment will then be placed into a compatible body, and it will create a soul. The soul may be different from the original soul but it will have the same origin and hence be considered the same.
This is all theory though, it has never been realized by anyone as evident by the records in the library. There was a prediction that origin gods could do it but when people reach the origin god level, their body, soul, and origin begin to fuse which makes it very difficult to remove or fragment any one of them.
This special situation of origin gods also makes the previous endeavors to make clones worthless. Origin gods can easily create clones because they get access to their soul imprints at their stage. It is very easy to create a clone with access to their soul imprint, the clone might not be able to reach the level of origin god because of the immense difficulty but it can reach Sovereign level with their power and that would do.
They also don't need fancy methods of possession because they can always create a new body if they lack one. They also can't reincarnate because they will always have their soul, body, and origin with them no matter what, even if they are just a speck of their existence. From that speck, they can fully recreate their body, soul, and origin. That is why they are called immortal.
Origin gods take advantage of this ability to never die, that's why their origin essence is important, it contains their soul imprints. With that, they can resurrect from death but have to pay an expensive price for it. They also won't be able to retrieve the memories of their death if they die to another origin god because the origin god can use his or her domain to trap the soul fragments and prevent them from returning to the resurrection point. They will only have memories up to the point where they created that Origin essence.
All of this information broadened Gehald's horizon and made him realize the problem he would be facing in his hope to reincarnate. The difficulty increased because he was aiming to reincarnate into several bodies.
He had always wanted the unique abilities of certain races and he wants to have them all. He doesn't want a possession but a true reincarnation, only this can give him the divine abilities of other races. But the reality is telling him that he has to give up the notion of multitudes of bodies if he wants to succeed, and even if he succeeda he might not be himself.
The most important barrier he found to reincarnation is the difficulty of simulating true death. Because only after death can the soul leave the body and enter the river of reincarnation, it is an instinctive process that a mindless soul will perform.
So how can a conscious soul hope to somehow get to the river of reincarnation and also keep its memories? This barrier is difficult to resolve on so many levels, the most difficult one is finding the location of the river of reincarnation. No one in existence knows how to get to the river of reincarnation, except maybe the realm lord.
Another problem is the range of the river of reincarnation, if he were to somehow reach it, will the river of reincarnation he found be for just realm high heaven or the entire void universe. Also, how is he to select a favorable body to reincarnate in, currently he wants to ditch his high elf body which is arguably the body with the best affinity to mana and magic. What are the chances that he will get something better?
So in summary how is he to simulate true death, locate the river of reincarnation, send his soul into it intact, select good bodies of his choosing, reincarnate and maintain his original identity throughout the process.
It is a daunting challenge, it made becoming an origin god an easier choice. He has origin essence and life essence, he could give up on his silly idea and decide to become an origin god. It would be so easy for him but he didn't give up. Instead, his eyes lit up when he discovered the immense mountain he is up against to achieve his dream.
"The more difficult something is to achieve, the more worthwhile the endeavor probably is." He thought to encourage himself.
Plus the realm lord's speech got to him so it was easy for him to remain upbeat. The most difficult part of his plan is the first step. Once he is able to overcome the problem of reincarnation, he will get to enjoy the sweet fruit of perfection and the power that he craves. Just the thought of it made him smile.
He picked up his speed and rushed towards his house. He doesn't live with anyone which isn't weird for a high elf powerhouse like him. He used to live with his elder brother and sisters when he was younger but he had moved out when he became a lord of law.
Back when he lived with his elder brother and two sisters, he was the last born of the family. He had been born before his mother and father left for the upper realm, so he didn't get to spend much time with his parents. His sisters raised him, they pampered him too much, this made him grow up lazy. He had only been able to reach the level of a king because of the purity of his bloodline. Then the demon invasion happened and his life changed.