At its most basic level, a good deck has one or two main attackers, several supporting attackers, and a handful of trainer cards
In both continuities, Utopia is the only one who sides with Yuma and Astral - the only two people immune to the uncontrollable corruption of Number possession for differing reasons - and chooses to stay beside them while the other Numbers have a consistent urge to possess people and cause chaos with those peoples' unhinged wishes
What sets One Piece apart is its loyal fanbase and the rarity of some Japanese-exclusive sets, like the Super Pre-Release Luffy Parallel Manga Art card, which has already become a collector favorite
If heads, the Defending Pokmon is now Paralyzed forever
And for a touch of interstellar flair, check out Ultimate Guards newest line of playmats and Sidewinder deck boxes, featuring officially licensed Magic: The Gathering artwork from Edge of Eternities
I'm sure you have your own ideas about what you'd like to see in the game