I don’t think so, because she was shown to have power without needing the wand, but fairies in the past have always needed a wand for magic I think, right? Otherwise there would be little reason for Blue to have taken Black’s wand from her before banishing her. I admit, because we got the reappearance of the wand (though I’m admittedly bamboozled as to why Rumple would have it when they have to get it from Blue in 3×11) and once again mentions of the dark fairy that gave Snow the fairy dust had me expecting the cliffhanger to involve the Black Fairy, but I’m reluctant to think it’s the Snow Queen. I don’t know how Blue goes about naming her buddies, but I can’t imagine anyone naming Elsa Black, with her decidedly glacial palette. I suppose we’ll see in the Fall.
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Keeper of Zelena's witch hat and the Black Fairy's wand.