User blog comment:Omega natsu2/Chapter 387: Tartarus Arc, Part 4: Father and Son, Predictions./@comment-24934658-20140530190632/@comment-7418318-20140531134029

MintChoi does have a point. Jackal could be revived after being blown to a pile of ash and scattered over half of Fiore, so I don't see why Deliora who also crumbled to dust should be impossible to revive.

While I do not think it will actually turn out this way, so far we haven't seen anything that would make it impossible for Deliora to be Silver's full Demon shape.