So, I was browsing through the forums a few minutes ago when I came across this thread, and I got to thinking:
Would the Black Kats from prestige missions still have the same probability of dropping the Book of Dark Rituals as the Kats found in regular Clockwork encounters?
Any insight into this theory would be greatly appreciated.
~W
Black Kats have actually a decent drop-rate. A lot of people believe the drop-rate is 1% for the Book of Dark Rituals but it's actually the exact same chance of finding a five-star material from any monster. Just a lower chance because of the low-spawn rate Black Kats have. Pandafishie basically answered your question thought.
So...what's the drop rate for a 5* material from a monster then?
Well, you have the chance of finding a non-prestige Black Kat in the prestige mission, which yes, drops extra pages, and has the chance of dropping a Book.
Answer:
Yes, but not the Kats at the last depth.