1st-picked Martyr's Chains, which slightly pushed me towards the empower theme in Kerendon. 3rd-to-last pick Bleak Basin Guide in pack 1 signaled that it was fairly open, so stuck with it and got rewarded with a solid deck.
....I never actually drew the Chains in any of my games (which may have been for the best), but it turns out running 11 fliers is pretty good.