YMMV / Once Upon a Time S4 E20 "Mother"

• Never Trust a Trailer: The trailers for this episode made it look like a) Maleficent was going to join Lily in getting revenge on the Charmings and b) she was actually going to attack them in her dragon form. But instead she tries to convince Lily to forget about revenge and create a better future with her, when Lily brushes her off and tries to leave town she actually appeals to the Charmings to help stop her, and the dragon that attacks is Lily (and almost attacked her, too).