A new sneak peek for the next episode of ABC's Once Upon a Time has been released, featuring Regina (Lana Parrilla) making her big transformation back into the Evil Queen.

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The clip from episode 10, titled Shattered Sight, was uploaded by SpoilerTV and features Regina being sealed her in vault.

"Sealed in my own vault!" she exclaims to herself. "This is the Savior's doing. I should've incinerated her years ago. This is what I get for being subtle."

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Finally, she stumbles upon the mirror, where she says, "What the hell am I wearing?" with disgust.

Regina then makes her transformation back into being the Evil Queen. As she gazes upon herself in wonder, she smiles, "I've missed you." The clip ends on her devilish smile.

When Regina comes back as the Evil Queen to Storybrooke, she gets into a fight with Mary Margaret (Ginnifer Goodwin), who has made her own transformation into Dark Snow.

"It's really wonderful, because Regina comes back [to the sheriff station] as her full Evil Queen self," Goodwin told TVLine previously, of the upcoming episode. "But instead of it being that they fall into their old dynamic, it's more that the Evil Queen battles Dark Snow, from those episodes where Snow White was under dark enchantment."

This episode is bound to be a fun one as the residents of Storybrooke lay into each other.

Once Upon a Time airs Sundays at 8 p.m. ET/PT on ABC.

Watch the sneak peek of the next episode of Once Upon a Time here:

Tags: Once Upon A Time television ABC