Get sparkle cards in Mario & Luigi: Paper Jam by scanning two amiibo of the same character

We all know that Mario & Luigi: Paper Jam lets players obtain cards for use in battle by scanning amiibo. But interestingly, there are also “sparkle” cards that can be obtained by registering two amiibo of the same character. One example would be to use Mario from the Smash Bros. line as well as one from the Mario Party line.

Source