User blog comment:IamJakuhoRaikoben/Chapter 451: Fairy Heart, Review./@comment-4933386-20150907065528

Veerrrry interesting chapter.

So what is the crystal meant to do? Revive someone or to preserve life? Me confused. And how did they get it?

Ok Yury died... I had a feeling that there's more to it, as that chapter didn't fully explain how he died at all.

Going back to the previous arc, Edolas arc to be more specific. They abducted the whole Fairy Tail Guild. Does that mean they could've gotten that Unlimited magic power if they had the Fairy Heart and somehow extract the power like they extract power from Dragon Slayers?