You get a booster pack from the set you got the code from
Venusaur EX - Special Illustration Rare If we have Charizard and Blastoise, we must also have Venusaur EX
One of the Dalmatian cards, Lucky - the 15th Puppy, is a great card that adds extra cards to the player's hand if luck is on their side
But having those dead cards is actually not so bad for Vespiquen because you can just discard them, and they still add value to your attack
In Archenemy, when you finish resolving a scheme (or when an ongoing scheme is abandoned) it just goes to the bottom of your scheme deck, so you never have to worry about running out, even if your game does run long
These were the six cards from the original D23 Expo set as well as Mickey Mouse Brave Little Tailor, all exclusive to that event