While cards in poorer condition may come cheaper, the 2005 Pokemon Japanese Gift Box Mew Mewtwo-Holo Gold Star #002 has shown incremental value when graded near-mint or mint, with prices exceeding $1,000 for gem mint-graded cards
The win-the-lottery moment with this card will be someone cheating out BSC early, and my having this in my hand
Read up the rules for: Kicker on Consult the Star Charts Devour land (instead of creatures) on Famished Worldsire Affinity for artifacts on Sami, Wildcat Captain and affinity for slivers on Thrumming Hivepool Poison counters on Virulent Silencer Convoke on Vote Out To save you a couple of searches, there's no infect, toxic, proliferate, or other slivers in the main set
Long story short, there are tons of neat ideas and reasons why you might want to make your own cards
Adapting to Meta: As you immerse yourself in the One Piece Card Game community, observe and adapt to the ever-evolving metagame