Mystical Dispute ($3/$7) is actually the most popular nonland at the Championship, and Im pretty sure that the foil isnt done growing in price
However, I've never been a massive fan of the highly competitive games: the meta (decks and cards being played) often compresses into 2-3 decks that are very consistent but kinda boring to play over and over again
Set Two Collect: Birdie the Early Bird, Can I Take Your Order?, Apple Pie Tree and McDonalds Multimixer
Its more so the fact that many of emeralds cards play better in conjunction with other inks, rather than with themselves
Its not just the rares that have value, either
Hari & Deepti's art for Wilds of Eldraine s Forest #266 illustrates this shift with a dark tunnel that sucks your gaze toward a lone, back-lit tree glowing in the distance