As I posted an early version of this elsewhere, I thought I'd post my final Fog build here.
Not too different from the standard Fog decks, but I haven't seen any since the DLC, and this adds a few elements I find crucial.
The main reason I didn't previously run a Fog deck was the draw quickly petered out, and if people destroyed your win-cons, you had no comeback. With the Obelisk, you get an addition win-con and via the discard mode, a way to ensure an uncounterable reshuffle by discarding Kozilek. Then on the second time around, while your Cultivates aren't too useful, and your Think Twices have exiled, the Obelisk allows draw filtering, lifegain to save Fogs, and crucially, the Courier's Capsules can be used again too.
Cultivate has an important use in land flitering and allowing you to afford all your spells, as you're constantly drawing and casting. The sooner you can afford to do both, or Archaeomancer and cast, or Wand and survive, the better shape you are.
Pre-DLC you were stuck with
Ior Ruin Expeditions which were made useless second time around due to having used all your land, or
Thassa's Bountys, which were too expensive and a road block first time around. Now with the Capsules, it's the first time I'm happy to use the deck without feeling like it's a archetype that didn't quite work, like Zombies or Vampires.