To the guy asking about BWL, if you haven't farmed MC to death yet I recommend just sticking with that. BWL encounters are so buggy and random at this point that it is not really worth the time investment for the average guild. We have engaged the second boss (Valesestreareaasas or something like that
) and twenty seconds into the fight had a Priest grab agro from our MTs and he had never casted anything. That sort of randomness doesn't add difficulty to the encounter, it makes it idiotic. The old Ragnaros (2.0) was like that, with the unresistible elemental damage that may or may not go off 15 times and wipe your raid. Having to repeat encounters in an attempt to get a good roll of the dice is moronic -- especially on an encounter like the second, where you are limited to 1 hour of attempts every six days (or 1 hour every day I think it is, now.)
So, honestly, if you are not farming Ragnaros I suggest working on him and waiting for Blizzard to properly fix the BWL encounters before frustrating yourself with them.