(Did you know that Leyline of MutationLeyline of Mutation is the only Leyline that falls within a five-color color identity that isn't five colors?) Duskmourn brought us four new Leylines, which had me wanting to take a snapshot of things before the new arrivals started climbing the ranks
Many people want to keep their cards clean, especially rare cards and cards that have a premium
Exploit only cares if you sacrificed a creature, not where it ended up after that
For now, at least, our information is accurate
Even in a fairer format, its hard to count out such an efficient Planeswalker that can race to a game-winning ultimate ability as long as you have artifact support
Then that player mills X cards. You get to not only mill someone out, but also take their coolest stuff