"The sun & the moon curse is fake."
Actually, Lucien is the mastermind of all, I believe. I wouldn't be surprised he invented this prophecy from scratch. Everything is going for him just too well. Klaus lost his one true love in the most tragic way (punishment to stole his "girl" and ditch him ?), he finally get Aurora for himself, he got rid of his archenemy, Strix will soon be extinct. I wonder if get Klaus back as friend is also part of his plan, I assume so.