Is there any formula or way of guessing whether Feign Death will work? I find Blizzard's wording of (often) or (usually) quite frustrating.
I have used it succesfully for a while now, but yesterday I was tackling a couple of raptors which were two levels higher than me, and they continued to munch on my body following FD.
Is it just hit and miss, or is there less chance of it working against higher level mobs?
Before anyone asks, I got the aggro because it was a new pet!