TL;DR: MTG card value is driven by three primary factors: mechanical utility in competitive play, historical scarcity (the Reserved List), and modern artificial rarity (serialized cards)
Players arent going to make the same mistake again, and therefore Three Tree City, a very similar card, is already preselling for big chunks of money
It allows you to counter a non-creature spell for free, as long as you have your Commander on the field
Cards x 4
The most valuable first edition packs are from Base Set, which sell for approximately 2k and upwards (depending on condition and whether its graded or not)
Im looking forward to a situation where someones playing Brago, King Eternal or Thassa, Deep-Dwelling and they pick what they want Scheming Fence to be every turn over and over