Transcript:
Phoebe: Again?
Marigold: I fear so.
Phoebe: I don't mind saving you from staring at your reflection, but isn't there a better way?
Marigold: We have not found it, through all the years.
Phoebe: Well, there's only been a Phoebe for the past nine.
I see why they came up with the Shield of Boringness. Because hunters used mirrors to capture and kill unicorns from their narcissistic curse. Much easier than finding a virgin female.