Or Laxus shows up and saves the day by stomping on him, oh wait, the lame curse excuse was specially made for him to stay out of the arc.
Very clever Hiro, very clever, because, judging on their nine demons crappy strength, Laxus would be enough to solo them, meh, only ones good are Deliora, King of Hades and END.
One thing that got my attention though is how Silver had the Gildarts aura around him before we found out he was Deliora, so I expected Gildarts to show up again and possibly spare with him, his beard also bears the same resemblance.
I still don't get why Silver spared Natsu and acted nice towards Lisanna, that part made no sense, if he was Deliora, then he would be cruel, logically, he's saying that he would kill Gray's friends on his own.
Either that or it's obviously not Deliora, that could be a lie as well, I mean..Juvia and Keith were talking about why a Devil Slayer would join a guild full of demons, and he's mentioned as a wizard, even Keith says that his power was recognized, if he was Deliora, then he wouldn't even need to prove his worth because he's part of the Nine Demon Gates to begin with..
I predict some stupidity in the next chapter, Silver seems way out of character, the way he reacts doesn't fit him at all, or I didn't get used to it yet.
Either way, he seems fishy, very odd behavior so I expect more backstory to come, the last page however makes me think that the transformation process is about to begin, but it could just be a mere shadow..We'll see next wekk.