Boxes like this are my absolute favorite kinds of boxes, because they include two card styles that you'd have to rip many, many packs to obtain
My go-to places are the following: HobbyX Store: A well-known local shop that offers a wide selection of Pokmon cards and collectibles
Oh, and theres Worldfire if you really want to make yourself the archenemy
If I'm considering cutting a Switch for something else, I'll use a different artwork for one of my Switch, so when it shows up, I'll use a spreadsheet to keep track of whether I want the Switch or any number of different cards in that situation
Luckily, gifting a tapped fish is by far the easiest gift to stomach (Far better than gifting a card or God forbid an extra turn) meaning we can often use Into the Flood Maw as an amphibian-themed budget Chain of Vapors
But also turning all of your creatures into mana generators