First Hint of Break Evolution Mechanic

The official product descriptions for the “Break Evolution Packs” featuring Raichu and Noivern have given us the first hint about the Break Evolution mechanic. The detail is obviously vague and up to interpretation:

In order to Break Evolve, you need the BREAK card, the pre-evolved Pokemon, and the Evolved Pokemon.

Could the “BREAK Card” be referring to the BREAK Pokemon? If this is the case, perhaps the product description is telling us we need Pikachu, Raichu, and Raichu BREAK to Break Evolve. As in, Raichu BREAK makes the evolutionary line more powerful.

Could the “BREAK Card” be a Trainer like Spirit Link cards, hence why the description calls it a “Card” instead of a “Pokemon?” If so, perhaps you use the BREAK card to evolve Pikachu into Raichu, and then Raichu gets some sort of boost?

What do you think is going on? Thanks goes to Michael S. for the translation!