User blog comment:A, Mori/Ludus History Idea/@comment-1713909-20140920012232/@comment-16075172-20140924123937

Actually, the executed witches had died long before that. The three witches who gave their teachings had used their magics to extend their lifespans and stay hidden for so long. And besides, the curse is pretty unknown to anyone who doesn't own the Book of Shadows since it was only ever recorded there, and there's still the fact that the curse was done with the power and wrath of the many powerful god-like witches (Ten of them who were executed, and then there's Zaion, who's powerful on a whole other level.), which might make it a bit difficult to just get rid of it.

And I'm also going to make a bit of a change to the story.