Before Rex officially got sent back to the Nine Realms. The Abyssal World decided to bind the Spear of Odjun with Rex. This was for two major reasons.
First, Rex could become powerful on his own. He needed guidance to use his powers or he needed the knowledge to be able to win fights when he needed to.
He could plan strategic plots to make his win easier. What good is plots when a person could be dancing inside the palm of their enemy? None.
Second, having a powerful being inside the Spear of Odjun was also beneficial. Locked inside a powerful seal was a fallen god from the Abyssal World.
By using the god's power Rex could become a True Demonic God, True Mortal God, True Heavenly God, True God, or even a powerful True Abyssal God, if not others if he can understand their energy components.
For instance Qi, it can be breathed, tasted in beast cores, cultivated using one's own Qi or getting help cultivating from someone else or a beast core.
If Rex wanted to learn about Mana. He would have to be able to learn spells, mantras, magic circles, plus any kind of elemental that world could use.
If the Nine Realms got Mana, they would keep their elements and the Mana would benefit everyone more. People need to live in order to get strength, the stronger people can become, people always have to be weaker.
No one can forever stay at the top, no one can ever stay at the bottom, unless they do not try.
In thinking this way, the Abyssal World hoped that Rex would get all kinds of benefits from this. Even the Spear of Odjun felt that this was for the best.
When Rex landed in the Third Realm. The Spear of Odjun could release a part of the fallen god to see the Nine Realms. The shocking part was, Rex could physically fight his way to the top and not break a sweat.
Looking at Rex, the Spear of Odjun felt that Rex was overpowered in such an environment. The Spear looked for a way to communicate with the Abyssal World.
Being linked to Rex, there was no way for the talk to happen unless Rex wanted it. Rex would not even want to hear the talk much less accept it.
The Spear of Odjun went inside a storage ring. This was to protect itself, Rex should not be able to do such things without permission. Who was Rex helping? Tiamat. She alone had access to multiple worlds and vast galaxies.
Rex being able to visit worlds and get understanding of powers and have Earth be revitalized. The motion was going slowly.
First, Rex had too many stuff going on. Second, every time he tried to finish a Quest. Something else always came up. Lastly, he felt tired.
Where power rules and men and women all fall for the strongest. What is going on through that person? Betrayal. If it is for another lover, or powerful person. Getting betrayed for a deal of a lifetime only to get backstabbing themselves. Jealousy for someone more beauty or powerful causing the betrayal.
Why would anyone want to risk it all for such? To know that the top spot belongs to such. Although people understand limitations, the hopes and dreams to always reach that goal is there.
Rex felt tired because he did not know if anyone was going to betray him. He already had the Soul Mate with Lilith. The original five women would have already birthed several children if not for Rex wanting to be patient.
What of the others? Rex had no idea how they truly felt when he was away. People can always say, "I love you," "I love you more," "I love you the most," but when the situation truly hits dire does that person still stay by your side or leave?
Rex was fearful that the women were on these lines. The Spear of Odjun felt that. When the fallen god checked the women closest to Rex, the fallen god felt them uneasy because they could not visit Rex.
The fallen god wrote a letter to Rex personally. The fallen god could communicate with Rex, but sometimes hearing something is different than reading it and if kept on good condition, who knows how many times one reads the same book, letter, same part of to get a better understanding.
This letter written by the fallen god could only be destroyed by the Abyssal World. The Abyssal World could not physically touch anything within this Realm.
Portals leading to the Abyssal World could open up. The portals could touch anything or nothing at all. Since the Spear of Odjun was being truthful to Rex. Nothing was spared but good words.
"My new owner,
I the Spear of Odjun can hit any target that I so desire. Although people can defend against me, eventually I will hit the target. I have checked all the way to the highest point here in the Nine Realms. You can fully achieve Godhood in a week if so you desired. Since I believe you are going slowly on purpose, I believe it is wise for you to gain knowledge.
This knowledge needs to come from battles across the multiverse, the Abyssal World, or even the Godly Realm. For you to have such power and wonderful women by your side. No one will ever try to defile you. To nearly everyone, you are a blessing in disguise. The ones who do not believe so, will die by the end of the month.
For I have seen the fight between you and two demons. They perish at the thought of winning but we merge victorious. For you to become truly strong, you have to become ruthless.
Not ruthless in a conquering manner. Ruthless to your enemies and not trying to spend the entire day matching what was happened.
Allow the two of us to journey together. Where the end of the road is where you become a True (some kind of) God.
Your Spear that never misses,
The Fallen God
The Spear of Odjun."