Watch Once Upon a Time Season 6 Episode 18 online via TV Fanatic with over 7 options to watch the Once Upon a Time S6E18 full episode. Affiliates with free and paid streaming include Amazon, iTunes, Vudu, Netflix, YouTube Purchase, Google Play, and Verizon On Demand.
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On Once Upon A Time Season 6 Episode 18, the Black Fairy targets Zelena when she needs an accomplice. Will the Wicked Witch choose the right side?