Official cards have immaculate, straight borders
Legality depends on the tournament format -- Heavy Fog can be legal in some formats and banned or restricted in others
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
Goblin Game: Each player hides a nonland card from their hand, then all cards are revealed
People love making EDH decks built around their Dungeons and Dragons character, Burden said
Korvold, Gleeful Glutton costs three more mana than his previous incarnation, though the cost is reduced for each permanent card types you sacrifice before you cast him