And a bunch of it is, from your perspective, totally behind the scenes: making it easier to schedule events, investigating backend networking optimizations, and things of that sort
I think it goes without saying that Sphere of Safety likely makes it so Battlecruiser decks wont be able to meaningfully interact with your deck at all
While these cards play best in 3-color decks, they work in 2-color lists, offering cheap acceleration that applies to most cards in a given list
I close off my list with a 2 mana 2/2 lifelinker with slight upside
Item cards can be played and left in play unless removed by you or your opponent, or the card itself says it must be banished to be used
Its whole schtick is that it gives +1/+1 counters and untaps creatures if a permanent left the battlefield during your turn