I was messing around with Light Warden + Voodoo Doctor. Doing some math suggests that it's flat out worse than Mechwarper + Metaltooth Leaper. I think Auchenai + Circle of Healing beats Mechwarper + Metaltooth Leaper if Auchenai + Circle goes second. Circle will always at least 1-for-1 while Auchenai will 2-for-1, and the combo can be coined out on Turn 3 to respond to the Hunter's Turn 3 board spam. of course, Auchenai + Circle will just lose of Coldlight shenanigans.
We had discussed the 30-copies-of-one-card game, and I guess this is almost like that.
Edit: It's funny how you can make decks to specifically counter other decks. Like, Secret Keeper + Eye for an Eye will beat Fireball + Ice Block, but it will probably lose to everything else.