Board Thread:General Discussion/@comment-24766715-20140707235615/@comment-5106672-20141008215106

First off: Regina was teaching magic to Emma. Not dark magic, simply magic. Some spells are certainly dark, but I don't think basic survival magic can be classified as such. I don't think that kind of spells are aligned.

Second, Zelena owning Regina's heart didn't hinder her use of magic, as she herself said she protected her heart from being used to control her. I think she simply needed to believe in herself, in the good within her. Don't forget that while Season 3b's underlying theme was "home", that of Season 3 as a whole was "believe", so she was able to use light magic when she started to believe she could be good.

As for Glinda, I think Zelena's spelle cut her off the map. It could have been reversed after Zelena's death, but that was after the Curse, so Glinda might either be free in the Enchanted Forest, or have returned to Oz. We also have to consider that Zelena apparently sent her there through a simple spelle, while we know that achieving realm travel is very difficult: perhaps that was a dimension within the Enchanted Forest which had its own rules due to Zelena's spell and could not be hit by the Curse.