Wow, just got home and looked, and there are 0 day old decks in the top 50. The deck I had at 32-2 is now 33-6, so it has taken a pounding lately, though whether this is coincidence or the result of some uber farm deck, I have no idea. There might be some real killer SoSa-based farmers out there that people have started using, but I've purposely tried to avoid using that card because it's broken to the point of being unfun. Something's definitely changed, though, but whether it's a whole crapload of farms or some epic new farmer, or maybe a change in the arena formulae, I have no idea, but this really looks like more than an RNG statistical anomaly.