Board Thread:Spoilers!/@comment-25733960-20161205025332/@comment-26830263-20170207205559

6x19: Anastasia (if the Multi-Savior theory is still intact) or Hook/Tiger Lily (if not)

6x20: Musical episode

6x21-22: Black Fairy. I have a hunch that she has a very long history from the era of Merlin and Nimue, so she deserve a double flashbacks, like 2x21-22. I still hold on to my theory that she's the creator of the Dark Curse