Board Thread:General Discussion/@comment-34924658-20150422012549/@comment-5899967-20150424135818

Tysonjackson wrote: We have the Trio of Darkness still in town to deal with. We have the Author to deal with. We have Zelena, who has now come to town, to deal with. And we have the potential of Emma going dark that we have to deal with. There’s a lot going down in Storybrooke.

The fight between good and evil is always epic and that’s no exception in this season finale. This finale may be more of an internal struggle between good and evil than it is an outer thing.'''

Trio might mean Regina, Rumple and Maleficent, I've seen those 3 together on set a lot during the final episodes. Regina is not evil, but she has still been on team Villains for this arc.