Board Thread:Spoilers!/@comment-6175354-20141023215822/@comment-25818098-20141212230046

Obviously Anna is the key to Rumple's defeat. Let's remember that the dagger activates the hat because of Anna's tears and Anna's character (the one who vanquished her bad feelings or I don't remember how exactly). So what if she does something awful on purpose, just to cancel her "quality" and make the hat immune to the dagger ?