Hearthpwn

Shifter Zerus not really needed, I'm just testing how well it works in Control, Shadow Madness is a possibility, although the 4 slot is pretty crowded either that or an extra Holy Nova.

Shadow Word Pains, Refreshment Vendor and Blackwing Technician help you progress to the late game. Excavated Evil is very powerful atm for this purpose, and Blackwing Corrupter really helps pick off annoying low health minions.

Mulligans more or less the same for most faster decks. You want Excavated Evil and Blackwing Technician, an early Shadow Word Pain can help deal with Totem Golem with Shaman or Imp Gang Boss, Councilman with Zoo. Refreshment Vendors and Twilight Guardian are of course useful too, but those aren't till turn 4.

For Control matchups you can be fairly greedy, keep a hard removal if you have it (Death or Entomb, Entomb being much more important vs Paladin). Shadow Word Pain is pretty good too as it covers a lot of early to mid game minions. Other than that, take some mid cost Dragons and/or Shifting Shades and you should be good to go.