That's nasty, because there is always someone frumping around with a bunch of key permanents to take out, like Primeval Titan, Deadeye Navigator, Elspeth, Sun's Champion, Karn Liberated, the aforementioned Mind's Eye or Sylvan Library, all of their non-lands
Strapped for cash, some turned to the internet to start selling their cards
Adding a Riftsweeper is also likely in your best interests
The reprints probably wont end there either, as there are a lot of possible ones on the table with various characters, objects, and locations that appear in both The Hobbit and Lord of the Rings
For instance, consider the following Legacy deck that really would not need to do much to transition to Modern: Creatures (29) 4 Lord of Atlantis 3 Merrow Reejerey 4 Silvergill Adept 4 Cursecatcher 3 Cosi's Trickster 3 Phantasmal Image 4 Master of the Pearl Trident 4 True-Name Nemesis Lands (20) Spells (11) Daze deserves an honorable mention as well, only narrowly missing the Top 25 list