"Might vs. Magic"

I wonder, why can’t you play as Jedite, Alamar, Tanta, Grindan, Labette, Ciel, Sephinorof, Andru, Nagash, Adel, the ice lightning specialist (I don’t remember the name), Ein, Kaitlimn, and others? Aren’t they mages?

Added 2 minutes later
And then you have a tournament – sword against some weakened magic...