Legality depends on the tournament format -- Heavy Fog can be legal in some formats and banned or restricted in others
This might not be entirely applicable to MTG, but its a fact that foil cards or those with special art are much more valuable than their regular counterparts
The player whose turn it is will put all of their triggered abilities on the stack in any order, then each other player in turn order will do the same
Official cards have immaculate, straight borders
People love making EDH decks built around their Dungeons and Dragons character, Burden said
Un-Set cards get to cheat at card design a bit, so it's not really fair to compare them directly to normal black-bordered cards, but for completionist's sake the two biggest creatures in Magic are technically Infinity Elemental with literal infinite power, and B