first edition team rocket card prices 1st Complete Set (83/82) 2000 [MP-DMG] Listed With Mascot. Abra 1st Edition 49/82

It has a unique card back that has never been used for any other Pokmon card

The graphic they added to the Mystery Booster packs had a square background, and the one they used for The List seems to have a rounded background, which creates a telltale difference in the shape of the cards border as you can see on Chatter of the Squirrel and Ancient Den as well as subtle changes in its placement on new border cards, as seen on Boros Challenger

You can only partner these commanders together, as the text says PartnerCharacter select

As of writing this, it available for Windows, MacOS, and in the App Store and Play Store, but it cannot be played on smart phones (only on iPads and Android tablets)

Then check out this list of Snapcaster effects that can make it happen