One could theorize and speculate (and believe me, I did!), but it is not until you build the decks and test them that the insights begin to flow
Check for yourself: The three best tools are Cardmarket for a quick overview, eBay Sold Listings for rare special cases (e.g., serialized cards), and price lists/hotlists to see whats actually in demand
2021-07-23 Like all results tables, the one on The Deck of Many Things cares about the result of the die roll after any adjustments, such as subtracting the number of cards in your hand
Oh, it all started innocently enough
The Trap "Metal Reflect Slime" can Summon itself onto to the field with 3000 DEF which is hard to overcome as there aren't many monsters in the game that have a ATK with 3000 or more
While the name and portrait are identical in the Gym Challenge expansion, the moves and artwork were completely redesigned in comparison to the Gym Heroes cards