I always start my sideboard building in Standard and Modern with four cards that are the best against red aggro
Seriously, my first version was over 125 pages long, and the current iteration is over 300 pages and 71,000 words
Mostly, Black Lotus is valuable because it is synonymous with value
Ayara, First of Locthwain (MUL-078) - Multiverse Legends Etched Foil Ayara, First of Locthwain (MUL-078) - Multiverse Legends Etched Foil Wizards of the Coast This item is like new, pulled from a sealed pack
Whenever we go down the path of a mechanic with an extra cost (and trust me this is a huge vein of design spaceR&D jokes that 90% of cards are kicker or split cards) I know I have to listen to a new round of choruses of "that's just kicker." And on some technical level, sure
Even just paying one mana to turn this spell into a basic land card is going to be useful in some games, but being able to find any creature you need, especially in a format like Commander, can be the difference between winning and losing