Lineups with Pelacor Conjurer at the front and Naga Assassin at the back are reasonably competitive at the moment when doing low mana battles. This is particularly the case if you combine it with a heal and/or triage card (herbalist and divine healer are pretty good choices for that, for instance). Also, the Lensmaster may be useful for adding Blind on the cheap.

But Chaos Legion will change everything when it comes out, I'm pretty sure!