This promo card was only available to Japan, and even then it was not easy to come across one.
There were a few different draws throughout the years in Japan, and it each time it was mailed to lucky winners,
who mailed-in proof that they purchased at least 6 e-reader booster packs during the promotional period.
This promo card does not store itself in some way on the save,
so it could not be extracted like e-Card Trainers and e-Card Berries (as .ect and .ecb respectively);
it basically ends up directly adding the doll to your save, not particularly different from the way this tool works.
Additionally, @HaxAras has a page that provides a bunch of saves, as well as detailing how to transfer the dolls onto an international system.
In order to use this .raw, users will need a VBA link with e-reader support.
Instructions on how to use the VBA link with e-reader support can be found here.