What Two Card Combos, build arounds, and unexpected card interactions did you discover at SOS pre-release?
Couple fun ones that may or may not have been obvious to everyone:
[[mage tower referee]] triggers off of every pest friend from [[lluwen, exchange student]]. I believe that's the only multi-colored one mana spell in the set.
[[prismari, the inspiration]] gives double storm to the storm cards on the bonus sheet. This requires a mythic and a rare bonus sheet card so is very unlikely to come together in a draft though.
2HG only, but [[pox plague]] has some really interesting sub-games to be played. "each player loses half their life rounded down" in 2HG triggers off of both players, so if both sides have an even life total the game results in a draw. Any side that has an odd life total ends the game with 1 life.
I had a kit with [[bulk up]] and [[berserk]] but chickened out of trying to go for the two card combo.
probably obvious, but [[mathemagics]] for 12 mana should be an insta-kill by the time you can get to 12. [[resonating lute]] is likely the fastest way to get there.