Im not so sure, and it all comes down to one card: Chromatic Lantern has been serialized twice, each in XXX/500 runs, in essentially the same format
Now its my turn to take a pass at what I think are the best MTG cards currently available
Also, as head designer Mark Rosewater once noted, the Ravnica: City of Guilds set was the first to make in-game factions highly cohesive and distinct thanks to their official names, watermarks on cards, and many cycles
A unique, synergistic combination allowing you to swarm the board with cute and creepy rabbits and dealing serious damage to your opponents throughout the game
Know what strategies you're likely to run into and have a plan for utterly dismantling them
A constantly growing car that also exiles cards until its owner decides to recast it again is solid but takes too much time to grow