Board Thread:General Discussion/@comment-24589671-20141026162403/@comment-5188977-20141103091757

AuntieJoans wrote: Zelena sent Glinda from Oz to EF in a second, but I don't think Oz and EF are in the same world. Got a point there, but it's ambiguous whether EF and Oz are or are not in the same world.

Argument for Oz and EF being in the same world: Zelena watched Regina from Oz and up until "The Jolly Roger" when Regina taught Emma to watch someone using a mirror, it was ostensibly impossible (for Regina, at least) to use that same mirror magic to watch across worlds/realms. Whether that was a limitation on Regina's magic, or a limitation of mirror magic itself, we are not informed. Zelena being able to watch Regina, travel to EF without the slippers AND being able to banish Glinda to EF is pretty strong arguments to them being in the same world. Also, we have Rumple who admits it took a lot of effort on his part just to travel to the LWM.

Argument for Oz and EF being in different worlds: Both Zelena and Dorothy (and the Wizard, possibly) were taken to Oz via a cyclone/tornado. In Dorothy's case, the cyclone/tornado served as a portal from the LWM to Oz. So it is possible it functioned the same way for Zelena to travel from EF to Oz. Perhaps teh biggest argument for Oz and EF being in different worlds is that Zelena also had to use the Silver Slippers to travel to EF to meet Rumple.

While Zelena was a powerful sorceress, there is some doubt as to whether she is more powerful than Rumple in possession of the Dark One's Dagger. If she was, then it would be possible for her to transport people to different worlds. However, we have yet to see a magic user move across worlds without the aid of an item or spell (Magic Bean, The Curse, The Slippers, Snow Queen's undisclosed method, etc).

Having said all that, Zelena banishing Glinda to the EF may just be a testament to Zelena's power, or a loophole in the storytelling. Without further information, it is difficult to determine whether EF and Oz are in the same world.

As for Arendelle, we have had Anna specifically state that Misthaven/EF is a two-week journey from Arendelle, so I am more inclined to believe they are in the same world, and that it would be well within Rumple's powers to transport Anna back.