Anyone in the fifth-dimensional level could do what the Chaos Door could do and create multiple Avatars, placing them all across space-time, but that would lead to wastage of so much Aetherium Essence they would have to be transporting mountains of higher-level treasures to make it worth the cost, because, unlike Aether that could be easily regenerated or collected, Aetherium was rather difficult to grow and maintain.
It was unlike the Chaos Door whose Avatar that had all the advantages of being created by Aetherium was instead created by the power of his Chaos Bloodline and so the price he had to pay was substantially lesser than what others had to pay for such a thing.
In addition to this, Labaletai had the bloodline of Chaos, making him a Chaos Blood, this meant he could enter the third-dimensional universes present inside the Great Darkness without much hassle, a feat that was extremely difficult for even a fourth-dimensional entity, talkless a fifth.