Haha no worries. Truthfully I haven’t really been a “hard-core” player for many years, in that I don’t play competitively any more. But I used to, and I still keep up with the latest stuff because I appreciate the design and sometimes there’s something I want to pick up for Commander or Cube. I especially love the sort of complexity on display in Modern Horizons (which was internally designed as “Time Spiral 2,” and Time Spiral is my favorite block of all time), and MH2. But I’m definitely not too distracted to speculate on AFR!
As I said earlier, I’m pretty confident Venture will be an ability word and Dungeon will be a special type of card that Venture interacts with. Obviously we don’t have much to go on, but that much I think can be safely guessed from what we do know. I also suspect dungeons won’t go into the deck. They might have their own separate deck, or go in the sideboard like Lessons, but it doesn’t seem like the kind of thing you would shuffle into your main 60. Just a hunch.
Since we know dungeons are double-faced, I’m assuming dungeons will flip when a certain condition is met (which I would bet on being unique to each dungeon). Flipping the dungeon could indicate that the dungeon is “completed,” or it could have another condition on the flip-side you have to meet to “complete” the dungeon. If it’s the latter, this gargoyle looks pretty bad.
Of course, this is all highly speculative. I could be way off the mark.