Miraidon ex/Raichu V

Wait. Where did you find the Scarlet and Violet cards?

You can't search them in the deck builder (which is super annoying) but they show up if you select Standard and just scroll through. Or you can add them to your collection and find them that way too

No energy recycler?

It doesn't really need Energy Recycler. Ideally, you have enough Flaaffy on the bench that you can seamlessly swap back and forth between Raichu and Miraidon for hits, with Klara acting as backup in emergency situations.

Can't import deck to PtcgL because of professor's research, please use other version of professors research. thanks :)

There are errors while importing the deck,plz check and fix this issue 

The import issue should be fixed now :)

Finally. A good Miraidon deck without $50 in regieleki vmax

Hold on hold on. Why are there 4 Arvens and only 1 tool

Question:

Why use switch carts if you have evolution pokemon in the deck?

This is pretty neat, I definitely think it could use a change or two to make it ideal, here's an idea i would try for fun, remove one nest ball, one professor research, and one miraidon, add one more electric generator and add 2 more energy, I feel this would make the deck more aggressive since you can spam the generators and ramp up your energies more easily, it might be a bad idea but I would be down to test out putting more energy in.

Just tested this deck in person - it works great! Thanks, apperusenpai

@Colress135 Hey that's awesome! Thanks for letting me know, I'm glad it worked well! :) For whatever reason I never got notified of your other comments, so I guess I'll answer your other questions too (better late than never lol)

Arven works well to bring out Electric Generators or Level Balls if you're desperate for a Flaaffy. There weren't any other cards in standard I could think of that would allow you to gather Items with 0 risk the way Arven does. As for the Switch Carts, they're just meant to work as a failsafe in case Beach Court gets removed and you can't bring it back into play for one reason or another. The small heal it gives is a nice bonus too. You could probably get away with taking a few/all of them out in place of other items, I just found them to be more useful than not in most situations!

Irida can get your items out and also search for Rad Gren and Manaphy, which makes it a tad better than Arven (I think?). Regieleki (Evolving Skies) might also be neat for the Lost Box matchup, you can take three-prize turns by sniping Comfey.

apperusenpai Ok thanks! I just switched the switch cart for switch, because I thought that it would work better in case of boss on flaafy. I also see now how useful the arven is in here.

Paisley Park, After Dark I did actually use Irida in an earlier build when I was first testing the deck, but Arven's ability to also bring out Forest Seal Stone gave him a slight edge over Irida. Regieleki is a good idea though, I'll have to try fitting it in and see where it goes!