Of course not every boss in cataclysm is in the game yet but who do you guys personally think is the hardest boss ever? (glitches and bugs don't count for example both pre-nerf cthun and muru were impossible until the hot fixes so they don't count)
- also dont attack other posts because you happen to be a fan boy of a certain expansion. offer your explanation of who the hardest boss is and why. thank you