Can a pixie polymorphed into an orca still cast spells from the pixie’s innate spellcasting list?

@JeremyECrawford can a pixie polymorphed into an orca still cast spells from the pixie's innate spellcasting list?

— adamTwright (@adamTwright) November 9, 2017

A pixie must handle its pixie dust to cast its innate spells. #DnD https://t.co/CN44t1BqcP

— Jeremy Crawford (@JeremyECrawford) November 9, 2017