You can email me specific questions at [email protected] or just to let me know how your experience with the decks go, I love to hear how they end up working in different playgroups!
The answer, probably, is it depends which format we're talking about
Now during each turn, both players must select three monsters from their Decks and reveal them simultaneously, one at a time
You can check your album at any PC, to see what cards you're missing, while at any time, you can pause the game and check your card collection out, seeing how many cards you have of each specific card.
Each card can be used as a standalone adventure hook, while multiple basic lands can be combined in any order to provide another starting point for a scenario
While largely in the hands of those with high status back in the day, over time, they spread out to regular folk