T8 4p, from Ulduar doesn't seem to work, I did 1 mil dmg test with and without 4p and dmg is so minor that it makes me think it doesn't work, i had sigil of awareness on.

Here is bug report, but i am not sure if it really is bug or what it is so i'd like to see more ppl who play dk and maybe know more than me give opinion.

http://www.warmane.com/bugtracker/re...#comment-25425