User blog comment:Jho5689/Chapter 392 + and More speculation on Silver/@comment-24934658-20140714173438

I think Silver is based on the his Tartarus (the Greek mythology version) King Tantalus who killed his son and stole the secrets of the gods and spread the secrets amongst others. I have a feeling Silver pretended to be Deliora just to get the secrets of Zeref and to prove himself he needs to kill Gray to rid the only person who could expose him. Farfetch'd I know but many of the characters are based on the Greek counterparts.