Barbarian

Well, firstly: 5 campaigns is a lot. Most likely, there will be 3. And the orcs are not separated by mountains. See the map of Ashan. There are tents drawn there. And it is unlikely that the necromancers kept their promises, because it is already an axiom that they are always traitors. So it would be better if they leave everyone in the lurch. And then a new expansion will follow with a water race (since only one dragon, Shalassa, remains), and the barbarians will most likely be Silat. And how did the necromancers teach the barbarians light magic? It is more likely that it will be necromancy and summoning, since these are the spells of the necropolis, which are more common.