As promised:

*WARNING* This is very difficult! You will be able to quickly solve the first part, but the second and third parts are truly trivial, and I am prepared to have no one solve those.

Onnicle: Maybe not the entire board, but most may agree, not every name or title is suitable for onniclization. It takes a bit of wizard to create and offer a tricky one that will be lauded, and allows the author to bask in the glory of lexical praise. The best ones provide a bit of (hopefully temporary...) bamboozlement. Though perhaps not woe, these cagey, escapist conundrums do provide mental stimulation and enjoyment.

Onnicle: Book, movie and musical have many differences. Besides the title, hidden are two two-word phrases naming aspects of a major character in the movie and musical that are NOT in the book.

I'll add a hint now: all four words are simple, kindergarten vocabulary words. Good luck! :0)