Board Thread:Questions and Answers/@comment-26021614-20150512205919/@comment-26021614-20150602172937

You're going to need your legend stones soon enough. Kikuri and Sefia are about to get the 7* forms, and shortly after, soul bound saga units will get theirs as well. Presumably all of them will require legend stones; not sure about Aurelia though since she was released after 7* was released.