Lam Lam has seen it allthe effects of the Khanfall, rule under Dragonlord Ojutai, the Phyrexian invasion, the birth of Shiko, and Narset's appointment to Waymaster
I think how you handle selling your cards really depends on WHAT you have to sell and ensuring you choose places that will get your collection in front of the right buyers
Bonus top common: The life-gain dual lands These are great for avoiding mana screw and enabling splashes, and you shouldn't be too afraid to take them early
In the same year WotC printed two cards with 20 toughness, (Ancient Adamantoise and Dawnsire, Sunstar Dreadnought), The Walls of Ba Sing Se stand up with the greatest toughness on a card outside of an Un-set
If you want to go for a different dpi, you can now easily figure out what size the card should be in pixels on your own
Every time a Land enters under your control, you can return a nonland permanent to your hand from your graveyard