More answers to flying, especially in your sideboard, would be a good idea, along with good removal
Value-Volume Hybrid Picks are ideal for businesses planning larger runs who need to minimize per-unit cost without sacrificing quality
Exile target artifact, creature, or enchantment with mana value X or less
(A creature with shadow can block or be blocked by only creatures with shadow.) A permanent with a shadow counter on it has shadow
Just keep in mind that you dont want to open this box hoping to get a lot of value out of it
That suggests that at least for now, the plan is for trading to only be available for older sets, presumably the ones where hardcore players have already maxed out most of their library and are just chasing a final handful of cards that still havent come up in packs for them