I have no problem with it, I've only had a couple of priests set alight so far, but I find it's so dumb. It's a random factor to make it harder by giving you silly handicaps. It should be tied to something, but it isn't.
EDIT:
BUUUAHAHHAHAHAHAHHWHHAHAHHAHAHHA
Just assassinated one level 8 Inquisitor with a level 5 assassin !!! LOL !
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