Flashiibo is a device that emulates NTAG215. You can think of it as an infinite supply of NFC tags. When used with certain mobile apps, you can make your own amiibos and repeatedly get amiibo rewards. It works in over 50 games, including Tears of the Kingdom, Breath of the Wild, Animal Crossing: New Horizon, Super Mario Odyssey and More. With the press of a button, it will become a completely new tag with a new serial number. Games such as Tears of the Kingdom and Breath of the Wild limit the use of each amiibo to once per day. A new serial number will make games think it's a completely new amiibo. Visit https://flashiibo.com/pages/manual for detailed instructions. Visit https://flashiibo.com/pages/faq if you have any questions.