They actually arrived earlier. It's pretty hard to revise because they're literally different every time. They can be used in Animal Crossing New Leaf with a magic lamp to summon a character and either bring them to your town or give you an item. If the character isn't a villager (e.g. Isabelle or KK Slider), they can give you a self-portrait or some other item related to their character. Cards can also be used in amiibo Welcome Update games if you manage to get the Wii U or 3DS as game items through the Fortune Cookie system. They can be summoned to help you in mini-games, and their stats are placed on the map for easy reference. I believe these cards are also compatible with Happy Home Designer and Animal Crossing: Amiibo Festival, but I haven't played those games yet. and don't know much about their use there.
Game console Sony PlayStation Portable E1000, black
67 Review
Grand Theft Auto V Premium Online Edition Xbox One Game Dongle
43 Review
๐ฎ ZeroStory Classic N64 Controller with 5.9 Ft AV Cable - Red and Blue Wired Joystick for N64 Video Game Console
6 Review
๐ฎ Nintendo Switch Controller Charging Dock Station | Compatible with OLED Model Joycons | KDD Switch Controller Charger Dock Station with 8 Upgraded Game Storage for Nintendo Switch Joycon & Games
9 Review