[quote=@KoL]
 BTW, should Berserker be able to feel her Magic Circuits being turned of even though Berserker doesn't know anything about Magecraft?
[/quote]

I hadn't gotten around to checking that post since I was doing other things.

Yeah, that's not a thing. Servants can sense other Servants, but they don't have the ability to notice Magic Circuits being active if they don't know anything about it. [@Turboshitter]