Thats excluding one-of-a-kind and promo cards, but nonetheless, the Black Lotus card is pretty remarkable, and its value keeps increasing
The set abbreviation, like all prior and post issues, can be found on the center right of the card - for Magic Ruler it is "MRL." On some a "1st Edition" stamp is printed on the center left
Unless you want to illegally print one of your own.
Infinite mana likely won't end the game on the spot, but it might let you flood the board and make a serious push to close the game out
UWR Control and other traditional control decks might not be the best positioned decks in the metagame, especially if their prevalence and win percentages are any indication, but their core spells are still very strong against Infect
It also has a bullseye on it, drawing out removal like Path to Exile, giving Marit Lage more chance to shine