Spellbound Friends

The Spellbound Friends is a treasure that is unlocked when the player scans the Pikmin amiibo from the Pikmin series. It looks just like the amiibo, and is worth.

Collecting the treasure
After scanning the amiibo on the area selection screen (in any sector), the treasure will appear in one of the Secret Spots of the area. Then, the player has to retrieve the Spellbound Friends in that spot.

Trivia

 * The "mysterious writing" Olimar mentions is likely the text found on the bottom of real world amiibos, which includes the copyright, logo, and serial number.