From fractional stats back in Unglued, to Stickers and Attractions in Unfinity, these ideas have always been great for players and a nightmare for hypothetical judges
I know not everyone gets sentimentally attached to specific cards or decks, but there are a couple of my EDH decks, and the same is true of my Modern folder, that I keep around because I have fond memories of playing them
Imagine seeing Ulamog, the Ceaseless Hunger having his text swapped with a Mulldrifter thats already gotten the extra value out of the enters-the-battlefield ability
Playtesters began independently developing expansion packs, which were then passed to Garfield for his final edit
The shopping behavior around this card doesnt look particularly suspicious, so most likely, Lumras rapid ascent in value can be chalked up to collectors realizing that it was illustrated by the same person responsible for Base Set Charizard
At one point, it also saw a decent amount of play in Standard back when Mirrodin Besieged was legal