User blog comment:12th Supernova/Chapter 808: Pachyderm Panic/@comment-72.205.181.157-20151128011930

Speculations based on this chapter

Gifters are crew members of Kaido's that were given the gift of ability through Smile. Which explain so many Chopper like transformations done by member of the Hundred Beasts Pirates. I'm guessing that smiles may not work exactly like zoan devil fruits. Df + science always makes something strange.

The Calamities must have an actual Zoan df, preferably Ancient. I am saying this because I am guessing that Diez Drake will also be a Calamity. Diez = 10 and there are card games based on the number 10.