Wow! This part of the Star Trek fandom was unknown to me. I even had a little trouble to know who is this "Reaper" but I loved it.
I go to see if I can find more fics with this crossover.

But you had no one who was called "Reason For Being Dangerous"?
I found this on bottom_mccoy, but was not available in our Livejournal .
Where can I find it? I'm on a mirror!verse fixation now.

Tanks!