First Edition Base Set means that the booster box in question is part of the Pokemon TCG's first print run - subsequent printings lose their First Edition label
The argument that I think is most relevant to Modern, the format where I think its most likely that playing more than 60 will be right first, is a variation on this argument that focuses on fetchlands specifically
23, 2017 Invoked Magellanica requires an EARTH monster and Aleister the Invoker as Fusion Materials, and is the only Invoked monster with no effect whatsoever
7 Pikachu & Zekrom 2 Pikachu & Zekrom GX Tag Team 2 Mewtwo & Mew GX Tag Team 4 Boltund V 4 Speed Energy 4 Switch 1 Eldegoss V The Pikachu & Zekrom Tag Team card is pretty powerful right now in Standard, but this Electric-type deck is managing to dominate the Expanded metagame as well thanks to a lot of general efficiency
The set of the evolutions would create a beautiful collection on their own, which suggests that all nine of the Pokmon, when Eevee is included, will likely become high-priced pieces
