I don't think this is possible, can you rewrite an amiibo card from Nintendo without a buying a new nfc. : r/Amiibomb
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Custom Amiibo Cards for BOTW | GBAtemp.net - The Independent Video Game Community
Switch / 3DS / Wii U] How To Make Your Own Amiibos - YouTube
How to make and back-up amiibo & create custom amiibo cards!! - YouTube
Hitokirikai Zelda Amiibo Coins | GBAtemp.net - The Independent Video Game Community