Board Thread:Spoilers!/@comment-25733960-20161205025332/@comment-25926288-20161216194345

The Serum thing is over. That died when that arc died because there's only one person that knows how to make it.

EQ turned into a snake because David said so and the wish took something's he thought literally. David wished she got what she deserved and called her a snake, thus she turned into a snake. Jafar actually has nothing to do with snakes in Once. That would belong to Amara, who's likely to not be mentioned whatsoever.