fen ; birth mother of fillory (tuzzah) wrote in valloic,
You know how it had to be destroyed because the evil future king opened the doorway between the underworld and Fillory and it couldn't be closed again? Margo went down to this time chamber underneath the castle where you can turn time forward or backwards but one way will make the world implode and that was the only way we could find to defeat Rupert and his army of undead.