It can be bought in a bundle that comes with this figure and the game, or separately as of November 13, 2015.
The Green Yarn Yoshi unlocks the same things a normal Yoshi amiibo would unlock in other games. Therefore, it will be compatible with the same games the normal Yoshi figure is.
Green Yarn Yoshi spawns an ally in Yoshi's Wooly World. This ally mimics the movements of the player and acts the same as if a second player would be playing.
Green Yarn Yoshi is a green dinosaur with a white belly and mouth. It has a red saddle on its back and brown/orange shoes on its feet. It also has orange spikes on its back and big eyes. It is made of yarn instead of plastic like other figures.
Made from actual yarn, Yoshi has never been more adorable! Kind-hearted, naturally protective of others, and perpetually hungry, Yoshi™ is always up for adventure…there are so many mysteries to explore and new things to find! Yoshis can flutter their legs to jump incredibly high and can use their long tongue to snare enemies or other handy things.
Light Blue Yarn Yoshi
Green Yarn Yoshi
Pink Yarn Yoshi