Will Damian ever become well… Non-deoxys again? What do you guys think?
My theory is that nora will use celebi´s tesseract ability and bring damian back to his normal form.
Honestly , he probably stay like that and be the one that joins the infernal cult and betrays us like the prophecy says.
Can someone add a spoiler tag to this?
(spoilers even though there’s a spoiler tag 
)
It’s always possible that the cure is easy to reverse-engineer for Reukra, but he won’t give it up for science reasons/evil reasons/he gets incapacitated or killed before he can distribute it.
Honestly, though, it seems like the Deoxys-hybrids have their own purposes to serve - an Infernal/Deoxys alliance would be really cool and unexpected!
or… we know that nora has traited him quite strictly so she could try to make up with him by healing him with tesseract but damian will still remember that and will join the infernal cult making him the chosen one. Shaymin will also definitely become sky form. As a deoxys hybrid, he wont join the cult because he will have other goals…