I started with a Conqueror, getting him to 23 before I rerolled a Dark Templar. I duo'ed with my wife's Priest of Mitra with the DT up to 40, but got bored with the gameplay.

I then rolled a Tempest of Set and absolutely love it. I just hit 60 and the AoE ability is insane.

My ToS doesn't do as much damage as my wife's PoM, but the AoE makes up for it. I also never run out of mana with my spec.