Board Thread:Spoilers!/@comment-1916997-20170725142404/@comment-31564770-20170726050133

If we're talking Lady Tremaine motive theories, I'd say that Gabrielle herself said that she doesn't think Tremaine has magic, but as she and Lana were talking they were saying how Tremaine does have a sort of temperamental advantage over Regina in terms of prowess at villainy because it seems Tremaine is more calculating and tactical than our notoriously impulsive Evil Queen. So basing this on Tremaine not having magic, which could very well be wrong since they're only two scripts in and don't really know where we're going with this, as well as my theory that they'll do 7A in HH dealing with Tremaine and we don't meet who actually cast the curse until end of 7A or 7B, here's what I've got. In the interview linked above, I recall something about Tremaine having her own personal and painful reasons for wanting to be royalty. Which means of course that her goal is to be in charge and be royalty. My theory? The curse caster is someone who was very close to Tremaine, perhaps a sibling or favorite cousin, who was older than her by maybe 5ish years. Enough for this person to have some power over her through much of her childhood, and this person was always horrible to her, since they had magic and she didn't. The curse caster bullied Tremaine her whole life, making her do their dirty work and having her take the blame. This person was able to become royalty probably by marriage, and lorded their power over Tremaine even more. So at this point Tremaine is scarred and super bitter about how the curse caster has always used her as a stepping stool and how she's never been more than a minion, and now that they've cast the curse and sent her to keep an eye on things she has a bit of freedom since the caster isn't directly there watching all the time and she can cover stuff up pretty well. Tremaine starts messing with the curse, pushing people out, and the caster lets it happen because it adds to the cursed characters' misery. In reality, Tremaine has her own carefully planned super stealthy agenda to oust the curse caster and finally outdo them and make them serve her. Maybe she even has a way to steal their magic? You never know!