I think one of the "calamities" along with Jack "the drought" will be an insect zoan by the name of poka (POE-Ka) or poker and be known as "the famine" since insects are sometimes a cause of famine? And there was a theory out there stating that Kaido's crew is named after card games. Jack could be from "black Jack" while the female was named "Rumming". So I would think Poker or a play of the word "Poker" would be the name for one of the calamities. We haven't seen many insect zoans besides the vice admiral with the tarantuala (who put sea stone cuffs on Marco during the war of the best) devil fruit why not another insect?