A white weenie deck in which it is very difficult to run out of gas.
Value/card advantage:
Court Hussar, Thraben Inspector, and Squadron Hawk draw straight gas. Loyal Sentry is almost guaranteed to trade up or eat removal, and Kor Skyfisher bounces ETB creatures for more value. Brainstorm combos with Squadron Hawk very well, and with the fetches. Shared Discovery is not a win-more this time. It is a win-now! Tapping every creature to play this is not a bad choice when you're probably going to draw a bunch of 1-2 drop creatures with it, and have mana to play them after. It's the secret sauce that keeps the deck going after dumping its hand.
Removal:
Sunlance is a cheap and effective removal spell against most decks. Journey to Nowhere is similar, but at a higher price (and less conditional). Gaze of Justice deals with any threat with good reliability (and is reusable), and saves us mana to play more creatures.
Threats/finishers:
Any flier will be a threat on most boards, and a hoard of non-fliers will be threatening (and at the very least clog up the ground) for the opponent. Bonesplitter turns fliers into a fast clock with little investment. Stormcaller's Boon gives the ability to make a final, lethal swing. It should be extremely useful in the case that the board is stalled, which is often with this deck.
Utility/sideboard:
Reinforcements can be cast on the opponent's end step to construct the perfect top-deck. It can be used with Brainstorm and a shuffle effect to fill the hand with pure gas. On the beatdown? Revive some fliers. Need a blocker? Revive Loyal Sentry. Just want a bunch of cards? Revive a bunch of Squadron Hawks, etc. Feldon's Cane refills the deck with an injection of gas after a long match. It is particularly useful in long games, because this deck draws so much that it occasionally nearly mills itself.
The rest of the SB is standard U/W stuff. Blue Elemental Blasts to deal with red decks. Disenchant as a catch-all. Dust to Dust for artifact heavy decks (affinity). Holy Light to show other go-wide decks who's better. Lone Missionary to slow aggro and burn. Patrician's Scorn is for Bogles or any enchantress-style enchantment spam deck. Standard Bearer excels versus burn and Bogles or any removal-heavy deck. Prismatic Strands helps further against aggro and burn to let us survive until we can build up.
Please note that this deck uses unified pauper legality, meaning some cards are included that are not legal in MTGO. These cards are: Blue Elemental Blast (replace with Hydroblast), Feldon's Cane (replace with 2nd Reinforcements or Dispel).
Update #1
Stormcaller's Boon was removed because it's too slow in the matchups where it matters. One copy of Shared Discovery was removed for the same reason. Tandem Lookout was added in low quantity to give card advantage. The SB Disenchant was replaced with Kor Sanctifiers because the body is very valued in this deck. Taking inspiration from Boros decks, dual tap-lands were replaced by bounce lands because of the inherent card advantage they offer, along with cycle lands replacing some basics to smooth out draws.
