But what is really causing this situation
These offer a lot more for completion than battling online, in fact, and once you tick them all off you can still repeat the battles infinitely for fun
Scarcity creates value, and if many people are going after a particular card, it eventually becomes low in supply, increasing its value over time
There are four, but one of the best ones is Evolution, which lets you pick two Benched Pokemon and search in your deck for their respective evolutions, and then you can evolve them simultaneously
This is an easier way of grouping cards and solves the problem that some players do not know whether a promo card (that is not part of a main set) should be considered legal or not
Regardless of how the Modern metagame looks, you can expect to see this classic MTG spell somewhere