W/U turbofog - fog your opponent until they're milled to death.  This is a terrible deck to play against, and it isn't much fun to play with - matches are long, frustrating, and drag.  It does just OK against very aggressive decks like rg/rug zoo, affinity, that new all-in enchantment deck, or the standard hold-over infect decks.  It loses to most combo decks, like melira pod and storm (thank goodness valakut is banned), though twin is OK.  It is useless against burn and tron.  So I don't use it much, but it does pretty well against jund/junk, martyr proc, tokens, hatebears, gifts control, and other decks about the same speed, so there's that. 

Blue seems better than green.  White has plenty of fog effects, artifacts draw extra.  Gone off & on adding hard counters, really need 2cmc counter.  Spell pierce, remand, and mana leak are useless in the late game, so cryptic command or dissipate are good, but 3/4cmc really pinch mana when you need a fog or double fog.  Sideboard needs some fiddling.

Cut fetch lands because they're bad when you've angel graced to one life or heaven help you deck yourself first against some decks.  Extra draw helps get a fog effect every turn.  Isochron package to use with dawn charm or angel's grace against burn, because otherwise that's 100% unwinnable. 

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Not settled on the right wincon:
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Gideon, Champion of Justice - brand new, looks potent against creature decks filling the board, tick him up, exile everything, swing
Jace, Memory Adept - one activation is usually enough
Psychic Spiral - ends the game about 50% faster, but really bad draw early
Elixir of Immortality - so slow that when they have a 1-of shatterstorm or something, they'll find it
Hoofprints of the Stag - sorcery speed makes this crappy, and the new abrupt decay around...
Azor's Elocutors - dies to everything but bolt and abrupt decay

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Selection of Locks/Fogs/Mines floating in/out
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Privileged Position - doesn't help against shatterstorm/creeping corrosion effects, nice if they side in grudge for your mines
Venser's Journal - instawin if you can resolve against burn, but at 5cmc that's a serious crap shoot even with dawn charm

Kami of False Hope & Emeria - a permafog of sorts, just sac in response to any removal, if on your turn, have to rely on normal fogs instead
Knowledge Pool & Curse of Exhaustion - hard lock that takes forever to setup and can be blown up in the interim
Stonehorn Dignitary & Venser - permafog, rhino is easily killed, only takes 3 turns to make venser a wincon, but that's more than I've ever gotten

Angel's Grace - really good fog type effect against literally anything, but some life loss floating around
Silence - buys another turn against combo, but pretty bad otherwise, even on scepter
Batwing Brume - fog, even with black mana, only works once as a wincon
Angelsong - cycling is nice, but not sure about holy day at double the cost
Kami of the Crescent Moon - dies to everything, don't want to waste counters/fogs protecting