Hallelujah
Alexander Hayne won the second Pro Tour of the year, Pro Tour Avacyn Restored in Barcelona, with an innovative deck most players hadn't considered or tested against.
His deck was a white-blue control deck that pushed the miracle mechanic as far as possible. The deck was designed to do everything it could to draw one card per turn for as long as possible to get as many chances as possible to trigger a miracle, and it played as many miracles as Alexander could fit in the deck.
On the surface, this might sound like an obvious design, in which players just searched for every card with a certain keyword and put them all in a deck. But the deck made beautiful use of cards few others had considered, like Feeling of Dread, to enable an insane combo finish at the end of the game in which Alexander could “go off” with Tamiyo, the Moon Sage and Temporal Mastery.
On its surface, the deck looks like it's just trying to miracle a large Entreat the Angels and then attack, which is true to some extent. Watching the deck actually win was often incredible, though, as it would use Tamiyo, the Moon Sage to string together several turns with Temporal Mastery, generally ending the game in an extremely convincing fashion completely without warning: a true deus ex machina ending.