Collectors and many players want cards like Juzam Dijinn, Library of Alexandra and Black Lotus because of their history and significance
Graded Population Report: Sandslash [1st Edition] #41 Visualize the distrbution of grades in the chart
The Master, Gallifreys End The Master, Gallifrey's End rewards you for your nontoken artifact creatures dying to dock down the highest life total amongst your opponents
Consider playing 5-color mana sources like Blitzball and Capital City alongside this for more options though
My best tip here is, check your local machines randomly throughout the day whenever you can, you may just get lucky with a drop
This presumably exists so that players can't do gross things to their hand and force their opponents to touch them, and while we're still under a pandemic, this ruling is even more necessary than it was before