I hate aimless Chaos decks that cast Scrambleverse, turning a 1hr game into a convoluted 4hr game "because it's funny" -- it's not funny, Jim, and you play that deck again I'm gonna spill my Cola all over it -- but Chaos-themed decks that actually try to win and are focusing on "random" effects like Temporal Aperture and Jeleva, Nephalia's Scourge are totally cool in my book
A very similar Stadium called Burned Tower was printed in UD, however, since it allows any basic Energy to be drawn, it actually seems weaker to me in that it will certainly be able to help your opponent out while Conductive is less likely to do so based on their deck
More recently, they are seen as grouped together on the cards, and not as individual letters
Itd be more thematic if Black Chocobo had something like landwalk, but apparently WotC wanted to avoid that
1 Claim the Precious
You can also label each divider with the name of the set, making it easier to access the cards you need