This is the first draft of my idea for blue/white control post-rotation. Any comments or constructive criticisms are welcome.
The win condition for this deck is AEtherling. I counter or bounce my opponent's creatures and spells until I hit my seventh land drop, then cast Aetherling and go to town.
Heliod, God of the Sun is included to provide Aetherling with vigilance and to give me an alternate win condition. If I'm either not drawing Aetherling or have lost them to my opponent's control, then Heliod can pump out 2/1 creatures with vigilance to (hopefully) overwhelm them.
Thassa, God of the Sea provides me with a guaranteed scry on my upkeep, which effectively halves the number of draws I need to take in order to pull lands or Aetherling. Dissolve also gives me scry power while also providing a hard counter against my opponent.
Azorius Charm is extremely versatile, either granting me card advantage or a bounce spell. Sphinx's Revelation gives me draw power and some life ramp.
Blind Obedience and Detention Sphere are meant to slow down my opponents, especially if they are on the aggro plan. Blind Obedience in particular is a nasty card for aggro decks to deal with. I'm considering throwing a second one in here, but I'm not sure what I'd replace yet.
My sideboard isn't set in stone by any means. Dispel is to be boarded against other control decks as it provides me an extremely cheap counter to their counter. Essence Scatter is a bit meh, but it seemed like a strong sideboard card. I probably don't need to run four, though. Nightveil Specter might stay, but I haven't come to a final decision yet. Sundering Growth is going to be very powerful if a good amount of enchantment creatures see constructed play. As it stands, it's still a fairly strong card.
I'm mostly looking for suggestions for the sideboard. Mainboard suggestions are certainly welcome, though. I realize that I will never hit devotion to white, and devotion to blue is unlikely to occur as well, but adding permanents means subtracting control, and I'm not sure I want to do that. I will welcome any recommendations for substitutes, though. Just keep in mind that this is post rotation, so no Innistrad block card suggestions please.