Fanged Marshmallow

The Fanged Marshmallow is a treasure that is unlocked when the player scans the Boo amiibo from the Super Mario 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 Fanged Marshmallow in that spot.