While the Alpha Card pool offers a limited number of options for these kinds of gimmick decks, they are fun as hell to build and try out
They're still genuine Base Set, and high-grade copies of marquee cards like Charizard still command serious money, but they're a tier below Shadowless, which is several tiers below First Edition
Lets eat someone elses and get all Spidery
Those games which manage to have very little randomness or at least no imbalanced random effects while maintaining both good variation and good enjoyability are the "best" types of game
The rulings also happen to be a wellspring of Textbook Humor, with many entries having funny and often snarky remarks inserted as Easter Eggs among the actual technical stuff
They contain a little bit of everything to get a player's collection off the ground, plus a unique oversized Spindown life counter themed after the set