Ragnaros, the Fire Lord, returns from vanilla WoW with a flaming vengeance as the last boss of the Firelands. Thanks to the recent hotfix nerfs or the culmination of weeks of hard work chipping away at the raid, many groups will be running up against Ragnaros for the first time and throwing their bodies at his waves upon waves of fiery doom.
As a whole, the fight isn't particularly intensive to tank -- there's no real equivalent to Nefarian's add phase here for tanks -- but it's still going to be a challenge. This encounter is the ultimate "don't stand in bad" and will require your utmost attention to avoid being burnt to a crisp in an unfortunate moment of tunnel-visioning. Strap on those attention goggles, zip up that flame-retardant suit, and glyph that Divine Protection. We've got an elemental lord to cast down.