What about the witch
Lew, Wiedźma, i Szafa
Well it is correct, but the title is "Lew, czarownica i stara szafa" (Lion, witch and old wardrobe)
Is this a Polish saying of some sort?
No, it's a reference to "The Chronicles of Narnia" by C.S. Lewis.
"The Lion, the Witch and the Wardrobe" is in Polish "Lew, czarownica i stara szafa".