The rules are pretty simple
On the positive note when it comes to tournaments in particular you can just focus on the game and because the various event based tournaments are not precisely linked by specific players, you can participate in these events at whatever pace you like
These cards shouldn't be counted directly as lands, but three copies of Elvish Mystic can be a fine reason to play, say, sixteen lands instead of seventeen or eighteen in your 40-card Limited deck
Cardboard sandwich Stack your Card Savers in submission order and place them between two pieces of rigid cardboard
Now, nobody in their right mind would suggest that cards like Thalia, Heretic Cathar or Urabrask the Hidden are in the same league as the above cards, because theyre not
This was pretty much the case in Return to Ravnica and Gatecrash Draftmost of the best cards were gold, and most of the gold cards of the same guild functioned along the same basic theme, so you couldnt go too far wrong by just picking a guild and sticking to it