First, the bad news: There was only ONE Island in the entire top 8 of Worlds this weekend. It was in a Bant deck piloted by Manuel Bucher, who was eliminated in the quarterfinals.
Now, the good news: I’d heard about this tech a couple of weeks ago, but it’s becoming more and more widespread. This weekend at Worlds, Gerry Thompson did a video deck tech about a Standard build he designed, which he dubbed “Spread ‘Em” after its primary strategy:
See, the thing about Jund (and many other popular Standard decks right now) is a not-quite-reliable manabase. This deck attacks that weakness, and seems to be having some success. As I write this, I’m watching live video of the team finals of Worlds. The Standard portion is a URW deck (not at all unlike my own current build) facing off against a Jund deck. Spreading Seas has entirely shut down the red mana sources of the Jund deck, slowing things down enough for the control player to stick an Ajani Vengeant and a Sphinx of Jwar Isle to win the game.
In a format with few Islands, Spreading Seas is essentially a cantripping land destruction spell. I absolutely love this strategy, and no doubt I’ll be trying it sometime this week.