Read+Write feature:

Call in backup Pikmin

More can be called in as the amiibo levels up.

Read-only feature:

Call in four backup Pikmin

Read-only feature:

Make a random other figure appear in-game to be collected

After the Pikmin figure has been scanned and collected, scan it again to make other amiibo figures appear without needing to scan them.

Thanks: Alex Oatley

Read-only feature:

Receive some energy points, once per day

This feature works with any amiibo (with the possible exception of those that work with its other features).