Welcome to What We'd Play! With SCG Indianapolis this weekend, many are unsure what they'd play in such a high-profile tournament. That's where we come in and let you know what we'd play and why we'd play it. Hopefully this last-minute advice aids in your decision making! Be sure to vote for who you agree with in the poll at the end!
Emma Handy – Urza Outcome
Josh McClain had the best Urza Outcome list last weekend, and Urza Outcome is the best deck in the format. Ipso facto, you should be playing a list similar to McClain's. There are a couple of things that this list is doing that others hadn't quite picked up on that are quite attractive:
Mystic Sanctuary being a way to recur copies of Paradoxical Outcome in pre-sideboard games or disruption in post-sideboard games is unbelievable. Normally a combo deck can't really afford to play cards like Snapcaster Mage, but Mystic Sanctuary has a similar effect in the context of an engine combo deck like this one and has an incredibly low cost to simply include it on the deck registration sheet.
There are a few ways that the various Outcome decks have chosen to actually end the game, and they each have their own sets of problems, but Mirrodin Besieged is the best. Grinding Station has the downside of not doing very much outside of the combo turns, or without Urza getting involved. Nexus of Fate is the poster child of clunky fail states.
Mirrodin Besieged, on the other hand has the luxury of playing like Sai, Master Thopterist or Saheeli, Sublime Artificer in grindy games and mid-combo, and then being reset to a kill condition via Paradoxical Outcome in the late stages of a combo.
If you're thinking of sleeving up Mox Opals this weekend, do yourself a favor and get some reps in with this beauty. Similar to getting in on the ground level of Ironworks, you'll end up being rewarded for committing to a deep archetype like this one early.