This trial dedicated to the Earth Mother can only be accessed by scanning the Celica amiibo. Within, you can battle 5 enemy groups that get progressively stronger to reap rare and exclusive items.
The north-most door will only open after defeating all four enemies at the far corners. Normally the stone tablets contain a passage from the Book of Valentian Revelations, but if your party’s Rating is too low, they will warn you not to proceed.
Each boss drops a rare item, but only once. After clearing the whole trial the first time, you will receive a Mila’s Ring and Mila’s Bow.