= Mods that replace individual factions =

Is the mod compatible with NHF - new heroes for Heroes V 3.1?

NHF adds various heroes, including mage heroes. But not elemental heroes. So, there shouldn't be any direct conflicts (although there might be if the mod for elementals contains complex scripts). But the aesthetic will be lost: you will have mage heroes from NHF in your Conflux, which isn't great.