@evouga The snow lands are actually priced... well I won't say "reasonably," but competitively at least, relative to the cheapest available foil snow basics. The issue there is that you get one of each which makes it really expensive to get the ones you need for a deck or two, assuming you don't actually need even numbers of all five.
The cat one is definitely the odd one out and seems to be more testing the waters for off-the-wall art in special editions, more like the SDCC promos than the rest of the secret lairs.
Leagues are where you just play five matches on your own schedule and get prizes based on your record. You can ignore the start/end dates... that's basically just when the leaderboard resets I believe. It's always running.
Challenges and playoffs are actual tournaments, one of which happens every Saturday. Challenges are open, playoffs you qualify for through challenges and leagues. Playoffs then qualify you for an annual championship tournament, iirc.
@stormanimagus I don't think we disagree by that much really. You're talking about this working as one more disruption piece in a full suite of already-good disruption cards, and I agree with that. I'm only saying that it's not a total haymaker that shuts certain decks out all by itself. It's a strong effect, but it needs to be immediately followed by either a massive threat or additional disruption.