While I respect the opinion of everyone, I am going to gently remind the person who told me "good one, how abouuuuut" that Dallis literally says the Aeteran only purges the source "stolen from the veil." Tarquin, who is not the narrator, claims it purges all source.
And it is preferred to avoid circular reasoning fallacies such as simply claiming "that thing related to dragons and lizards" without giving one citation or source.