Future expansions.

Regarding the Egyptian style for the mages: isn't it a bit odd that the Necropolis faction already uses it? In my opinion, it would be more logical to keep the Indian style for them (since it was clearly the dominant style for mages in Heroes of Might and Magic V, rather than Arabic, although the latter was also present to some extent).
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The Orcs don't belong to any single faction; they are distinguished by the fact that they worship multiple Great Dragons.