While these arent being handled in quite the same way as past Secret Lair Showdown events at MagicCons, they appear to share a lot of similarities
If you can keep a steady supply of cards in hand, you can answer almost anything your opponent can throw at you
This deck would run the usual counters-matter cards like Corpsejack Menace, Hardened Scales and Doubling Season
After playing with the decks, I went out and bought more cards from those blocks (such as the Dark Banishing I mentioned earlier) so I could experience their Limited environments
Witch Enchanter and Boggart Trawler are shockingly my fav of the cycle, but I think almost all of them are very playable
Kindred Discovery won't fit every deck, but it can be a good fit in merfolk decks, or in blink decks that care about good ETB creatures, like wizard decks