Here's how amiibo work in Pokken Tournament – Destructoid
You can claim a Shadow Mewtwo amiibo card if you purchased Pokken Tournament on the eShop
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Pokkén Tournament features amiibo support, coming spring 2016 - Polygon
Mavin | Pokken Tournament Nintendo Wii U complete with Shadow Mewtwo Amiibo Card
Pokken Tournament DX will work with amiibo
Nintendo Pokken Tournament (Nintendo Wii U) - Walmart.com
Pokken Tournament: Shadow Mewtwo : r/amiibo
Pokken DX Tournament Game, Tier List, Roster, DLC, Codes, Switch, Characters, Amiibo, Unlockables, Game Guide Unofficial eBook by The Yuw - EPUB Book | Rakuten Kobo United States