Limitless Heaven Realm

This is the final realm a cultivator can reach. One's Inner Domain becomes completely independent from its initial state. To reach this point, a 10th rank Open Heaven must fill their Pseudo-Inner Domain with more Universe Worlds. Once they reach a total of 12 Universe Worlds, 3 of which being 9th rank equivalent, and 9 being 8th rank equivalent, the Pseudo-Inner Domain will transform into a true Inner Domain. 

Also, in this realm, a Cultivator can be considered a Supreme Being, regardless of the world they are currently dwelling in. And as a Supreme Being, their existence has no adverse effects on the world around them, lest they wish themselves to do so. 

This Realm is equivalent to the Ancient Divine Spirits new Celestial Realm. As well as being nearly invincible to anyone of lower realms. However, a 9 directions array of 10th rank Open Heavens, would be enough to equal an early Limitless Heaven Realm. That said, any Limitless Heaven Realm that reached even 13 Universe Worlds, will be completely incapable of being defeated by anyone that isn't in the same realm. 

Once a cultivator creates enough worlds and forms a World array between the worlds, similar to the multi directional arrays. Their power begins to flow more freely and their growth is more rapid. It is here that they begin to follow the rules of significant numbers. 

The rules of significant numbers, is just a matter of creating the World Array in the same way as the Multi-Directional Arrays. 3, 4, 5, 6, 7, 8, 9 and 10. 

Example of these rules in practice; rule of 3's. For each rank world, one will have 3 of the next lower rank, each with a direct connection with the world ranked above it. So, for every 9th rank world, one can have up to 3 8th rank, 9 7th rank, 27 6th, and so on. 

For this reason it is a realm of power that few can understand, and even fewer can reach. 

Lei Jin, who reached this realm directly from the Great Emperor Realm due to his immense talent, is capable of refining living artifacts that have their consciousness. He is also the only person who has reached the rule of 10s. And has also begun the creation of entirely new world Arrays, focused on the same concept. It is due to this that his power surpasses all reason in the 3000 Worlds, and allows him the ability to rewrite its very principles, affording him the ability to destroy Ink.

World Array:

Is just using the principle of Multi-Directional Arrays, in a more permanent sense only with Universe Worlds in one's Inner Domain as opposed to cultivators on the battlefield.