World of Warcraft Firelands boss Lord Rhyolith isn't an especially fun fight. If he gets anywhere near you, he'll take up your entire field of vision. He's heavily armored (at least at first), so you get to see some pretty sweet 500-damage Mind Flay ticks if you attack him directly.

Lord Rhyolith is a two-phase fight. Rhyolith starts phase 1 with 80% damage reduction buff. During phase 1, the boss is unaggroable. The raid can change Rhyolith's direction by attacking one of his two legs, he pivots on the leg which is being dealt the most damage.

Lord Rhyolith is a gimmick fight. Players’s raid will almost certainly be split into two teams: one is that deals with DPSing the adds that spawn periodically during the fight, another is that deals with steering Rhyolith.

Lord Rhyolith will periodically use Concussive Stomp. This Stomping is an earthquake-type attack that will cause 25,000 or so points of fire damage to you. Unless or so the urban legend claims, you're really good at jumping in the air at just the right moment to avoid it.

If you are going to use DOTs at some point in the fight with Lord Rhyolith, always be sure to have the same DOT on both legs to cancel out their steering effects. A misplaced Devouring Plague steers Rhyolith on its own, and not always in the direction the raid wants him to go.

Usually, Heroism/Bloodlust/Time Warp is used on the start of phase 2, so be ready to use your Volcanic Potion and Shadowfiend. Keep avoiding those magma flows if they wind up anywhere near you, pop the occasional Power Word: Shield, and you'll be fine.