WOTC Master Sets - additional cards

Sorry for the double question post, but I’ve been wanting to ask both questions for a while (and they’re not related!).

In terms of validating that you have a true master set - what do you use? I’ve been just using Bulbapedia, but I’m getting a bit of a freakout going past WOTC in my binders because if I’ve missed a space, I’ll have thousands of cards to move. Pokellector does seem to have some cards that Bulba doesn’t, but it seems almost impossible to identify them without clicking individually on every single card to see any variations.

So my question is - other than what’s listed on Bulbapedia for the WOTC sets - are there any other cards that you know that are missing that I should be including in my master set? I know “Master set” is a bit of a loose definition these days, but for me it’s anything except error cards and print runs (I’m actually ignoring Base Set Shadowless as it’s technically just a print run variation).

What about different languages? boxer toppers reverse holos and then secret rares course :blush:

Haha English only for me - but yeah Bulbapedia in it’s Additional Cards section does cover all box toppers/theme deck exclusives/promos etc - I’ve noticed on a recent set (Sun & Moon) it is missing the LATAM (Latin America) championship promos. I’ve also noticed that in the EX era there are more stamped cards than are listed for some of the sets as well.

Ah thanks for clarifying! I’d definitely be interested in seeing that list - let me know when you have it :blush: