Garthanos
Arcadian Knight
A quick look at the compendium suggests you can make a swordmage where all but two powers normally acquired are Fire (1 at-will and a level 25 daily) or Lightning (1 at-will and a level 1 daily). Cold, thunder, and force all have enough powers that you can choose any one of them for more than 2/3 of your normally acquired powers.
Wierdly I want sword dancers which are very nearly martially cast... where its mostly hyperspeed for the magic ;=). No you arent teleporting you are moving very very fast... and that attack which harmed one guy big and his friends too well you were whirlygig ing and ended with a massive stab on the him. etc.
Its non-elemental ;-).