Yap, they do have astral on them, but than again they are immortal so the magic duel wouldn't have worked either.
Why does me having nature magic worry you? It's not like I need it for tartarians.
The thing that worries me is your magic diversity, and all the cross paths and high magic levels that you have. You only lack death magic, and luckily you didn't take that on your pretender.
Oh, yes, and that level 9 summon of yours looks nice.
Well this should make for an interesting war, although I must warn you, I have no intention crossing over any time soon, so you'll have to meet me in my dominion if you wish to fight.