I was tanking a ZA with an all guild group and we got up to Nalorakk and pulled the two warbringers and the one axe tosser while trapping the witch doctor (only cc we had at the moment). The fight goes on pretty well for a little bit, never go below 70%, and then all of a sudden I just drop like a rock and die. After trying again with the same cc, with the same result, I noticed that they had a buff on both of them that increases their damage by 50%, and after reviewing my combat logs, I realized that their mounts were attacking me as well, even though their riders hadn't been killed yet. Anyway, we tried with a guildy in the group who had a tanking offspec in case it was just me. Same result, and we're sitting there puzzling over why we're dying so much and couldn't really figure out an answer, and we come up with the conclusion that either the content is tuned around the Luck of the Draw buff, or that they just bugged out for us for whatever odd reason. I've known the healer for quite some time and I know that he's a very competent healer so I'm not sure what's going on.