We did for the first time Labyrinth 2 days ago with few guild mates. Badly, we haven't killed Murmur but I think we learn a lot about this instance. Now, its a question of time to see what he's gonna drop to us....

Just wait til we have to drop him on Heroic to earn the right to enter the Eye of Tempest Keep.

God, yea I'm not looking forward to that! I've killed him several times now, but at least he's only at 40% to start in the regular instance - I have a horrible feeling he'll be at 100% on heroic AND have new attacks. NOT COOL.

Holy crap, is that a palette-swap of Ragnaros I see?

He is in many ways a mini Ragnaros :)

According to the lore in the books you can pick up in the Labyrinth, he and Ragnaros are brothers; they're both old gods. I almost prefer Rag, though. At least he doesn't goddamn silence.