The Metaphysics of Doppelgängland

• Creating a temporal fold: The amulet of Anyanka, the 1120-year old demon first seen in The Wish, was lost in a history that no longer exists.
• The mortal Anya goes to see D'Hoffryn to request his help in getting it back. She asks him to "fold the fabric of time"--essentially, to use magic to reestablish the alternative history. Restoring the moment in time before the amulet was destroyed would allow her retrieve it.
• It would also, of course, restore the alternative bizarro-history and erase the normal history of the Buffyverse; the only reason the normal Buffyverse history exists is because bizarro-Giles had a chance to destroy the amulet.
• When D'Hoffryn is not sympathetic to Anya's request, she approaches Willow.
• Willow agrees to help Anya retrieve the amulet through magic (although Anya did not tell Willow everything).
• The spell to restore the amulet: Anya sets down a plate with a drawing of her amulet on it.
• Willow has provided candles, bones, chicken's feet and other spell ingredients.
• They first offer a supplication to Eryishon, the endless one putting their hands out, palms up, fingertips touching:

Anya: Eryishon k'shala meh-uhn.
Willow: Diprecht, Doh-tehenlo Nu-Eryishon.
Anya: The child to the mother.
Willow: The River to the sea.
Anya: Eryishon, hear my prayer.

• This cracks open a fold in time.
• Light flashes and mystic energy comes forth.
• As it does, Willow sees images of the events that happened in the timeline that had been undone.
• When Anya's amulet doesn't appear, she inadvertently triggers the spell by breaking the plate in anger.

The appearance of VampWillow: The spell does what it was intended to do in this respect--it restores the evil time-line. The spell does not effect the amulet, though. Hence, it does not prevent bizarro-Giles across town from crushing the amulet and restoring the normal time-line again, with one difference--VampWillow has not been erased. She appears in the restored normal timeline version of the factory.

The spell to send VampWillow back: This spell basically restores the evil time-line. VampWillow is put back in the time and place she was taken from, right before she was killed. Since VampWillow's reappearance does not effect the rest of the alternate history, Giles' smashing of the necklace happens again, and the normal history is once again restored. As a result of Anya's behavior and the spell, however, the gang now knows that Anya is a baddie stripped of her powers.

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