As opposed to inventing new card types
A card that seems utterly useless may be the perfect pick for a specific deck
It's more of a card that might be salt-inducing if you must watch the infinite extra turns
[Your Turn] When any of your Digimon would digivolve into a Digimon card with Save in its text, by suspending this Tamer and placing 1 card from under your Tamers as that Digimon's bottom digivolution card, reduce the digivolution cost by 1
7 Team Rocket's Transceiver Searches For Crucial Supporter Cards Card Number: 178/182 While they can only be used once per turn, supporter cards are arguably the most important cards at a player's disposal, and these cards can greatly change the game when they are used at the correct time
In parallel, there is another layer of demand driven by factors outside of gameplay: cards sought after for collecting , for being illustrated by a particular artist, for being a misprint , or for being part of a cycle