There is a big problem with the Heroes of Might and Magic orcs: they have a perpetual syndrome of fighting against slavery, but at the same time, they live according to the rules of barbarians: the strong rule, the weak serve! Because of this, slavery appears and a crisis occurs! A slave revolt! The government is overthrown! The destruction of the young orcish state built by the hands of slaves! A slide back into a tribal structure! Total degradation!
We can say that our orcs are nihilists and despise their brethren, which is why they moved so far to the East, maybe they have a different god? Not Mother Earth and Father Sky, but some god of blood from the fiery lands, or they are commanded by a disguised Faceless One, and our orcs are building a new kingdom of darkness for him! And give them black dragons!!!!