I haven't seen really any discussion about Catacombs on here (point me to where if there is some), but it really seems like Catacombs is going to be a real power card and Catacombs/BM is going to be tough to beat on many boards. Having two different choices on which 3 cards to draw is great, but the ability to cycle through the deck super fast seems to be the real power. I played a game where I bought a Catacombs and then on the next 3/4 turns was able to use it. 3 out of 4 turns where I had 7 card hands. That's pretty lucky, of course, but the card really gives you power over the reshuffle. I would imagine it would be really solid in engines as well, where you can draw 3 cards and if you don't get the engine parts you need to keep going, you can just discard and draw again. I'm pretty excited about this card.