Looking at PT San Diego's Top 8 decklists is kind of disappointing.

It's unfortunately, but it looks like little from Worldwake is changing anything, yet. I'm guessing me thinking people would be able to build, test and optimize new decks was a little optimistic.

All that was really new was an Open the Vaults deck making Top 8. I think. (I'm terribly outdated in this department.)

Niels Viaene - Open the Vaults

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lands (20) 2 Celestial Colonnade 4 Glacial Fortress 4 Island 2 Kabira Crossroads 2 Marsh Flats 3 Plains 1 Swamp 2 Terramorphic Expanse creatures (17) 4 Architects of Will 4 Filigree Angel 4 Glassdust Hulk 1 Sharuum the Hegemon 4 Sphinx of Lost Truths others (24) 3 Courier's Capsule 3 Day of Judgment 2 Fieldmist Borderpost 2 Jace, the Mind Sculptor 2 Journey to Nowhere 1 Mistvein Borderpost 3 Oblivion Ring 4 Open the Vaults 4 Spreading Seas sideboard (15) 1 Day of Judgment 3 Flashfreeze 2 Hindering Light 1 Jace, the Mind Sculptor 2 Journey to Nowhere 4 Negate 1 Oblivion Ring 1 Sanguine Bond

I'm not really sure how the deck works, but the idea appears to be to keep the board clear of creatures with Day of Judgment, Oblivion Ring and Journey to Nowhere while maintaining some card advantage with Courier's Capsule and Jace, the Mind Sculptor.

When you've stabilized, depending on what's in your hand, you swing with one of your big creatures – be it Sharuum the Hegemon, attacking with your Celestial Colonnade or more likely, either a Filigree Angel or Glassdust Hulk.

Although there are four copies of Sphinx of Lost Truths, I think that the Sphinx of Lost Truths and Open the Vaults ‘combo' is probably not reliable enough to count on going off often enough (especially since it's really only awesome with Filigree Angel in your graveyard or Glassdust Hulk on the table – rather situational to me).

The synergy between Open the Vaults and a lot of cards in the deck is notable – because you play it late in the game – when most people have exhausted their cards trying to deal with you.