The final stage of the fight involves Archdruid Hamuul Runetotem, Malfurion Stormrage, and Cenarius assisting players in dealing with the entirely new mechanics this new heroic mode phase presents. If you've been trying Ragnaros or have killed him, you already have experienced the hilarious Living Meteor ability. In that new phase, meteors must be kited over patches of ice on the ground to freeze them, and then players must DPS down meteors to control the number up at any time. At that point, players are also frantically running around extinguishing ground fires and trapping Ragnaros in roots on the ground.
All in all, it looks incredibly fun and challenging, and it's very nice to see Ragnaros putting his new legs to good use kicking the crap out of guilds across the world. My favorite part of the video has to be the end, with the custom death animation for Ragnaros. Watch until the very end -- it's worth it. Congratulations again to DREAM Paragon for their heroic first kill and for this awesome video of the accomplshment.