Out of these three, one card will always be a special amiibo card, meaning it features a character whose house you won't be able to build without using its amiibo card. (gonintendo.com)
We can't say exactly what kind of extras you'll get from using amiibo in the game, but we can say that they're compatible. (heavy.com)
This is a lovely fun game and the fact we can use our amiibo with it is awesome. (amazon.co.uk)