After all his bluster about the way the Precursors modified their bodies, there’s almost a delicious irony to this—except that, in this case, the genetic fiddling Ferial has done really is crucial to his evolution whereas the Precursors did the same just for a lark.
Ferial: As such, they have been genetically modified to facilitate the transfer to my final form.
Ferial: They will not last long -- but then, they won't have to.
Ferial: At long last, all the pieces have fallen into place.
Ferial: I have waited a very long time for this.
Ferial: I think I shall enjoy it very much.