Stage One: By Fire Be Purged!

• Sulfuras Smash - Ragnaros faces the location of a random player and prepares to smash Sulfuras on the platform. The impact of Sulfuras inflicts 550000 Fire damage to any player within 5 yards of the impact, and creates several Lava Waves which move out from the point of impact.
  
  • Lava Wave - If a player touches a moving Lava Wave, the lava inflicts 100000 Fire damage, 30000 Fire damage every 1 sec. for 5 sec., and knocks the player back.
• Wrath of Ragnaros - Ragnaros blasts the location of a random player, inflicting 60000 Fire damage to all players within 6 yards and knocking them back. In 25 player raids, Ragnaros blasts three locations.
• Hand of Ragnaros - Ragnaros inflicts 30000 Fire damage to all enemies within 55 yards, knocking them back.
• Magma Trap - Ragnaros launches a Magma Trap at a random player's location. When the Magma Trap reaches the platform, it inflicts 60000 Fire damage and knocks back players within 8 yards. The active Magma Trap persists for the duration of the encounter and triggers when stepped on, causing a Magma Trap Eruption.
  
  • Magma Trap Eruption - A triggered Magma Trap erupts for 80000 Fire damage to all players, and violently knocks the triggering player into the air. The Magma Trap causes the triggering player to take 51% more damage from other Magma Traps. This effect lasts for 30 sec and stacks.
• Magma Blast - Ragnaros blasts magma at his current target if he cannot reach and melee them, inflicting 75000 Fire damage and increasing Fire damage taken by 50% for 6 sec.

Intermission: Minions of Fire!
At 70% health Ragnaros casts Splitting Blow, burying Sulfuras into the platform and creating Sons of Flame across the platform. Ragnaros submerges for 45 seconds or until the players destroy all the Sons of Flame, whichever comes first.

• Splitting Blow - Ragnaros buries Sulfuras within the platform, inflicting 70000 Fire damage every 1 second to players within 6 yards and creating eight Sons of Flame that attempt to reach the mighty hammer.

Son of Flame
Sons of Flame cross the platform and attempt to reform with Sulfuras. A Son of Flame that reaches Sulfuras causes a Supernova.

• • Burning Speed - For every 5% of their remaining health above 50%, Sons of Flame move 75% faster. When players reduce a Son of Flame to below 50% remaining health, the Son of Flame loses the Burning Speed effect.
  • Supernova - When a Son of Flame reaches Sulfuras it explodes in a Supernova, inflicting 125000 Fire damage to all players.
• Lava Bolt - While Ragnaros lies submerged underneath the lava, bolts of hot magma fall on four random players every 4 seconds. A Lava Bolt inflicts 45000 Fire Damage. In 25 player raids, bolts of hot magma fall on ten players.

Stage Two: Sulfuras Will Be Your End!

• Sulfuras Smash - Ragnaros faces the location of a random player and prepares to smash Sulfuras on the platform. The impact of Sulfuras inflicts 550000 Fire damage to any player within 5 yards of the impact, and creates several Lava Waves which move out from the point of impact.
  
  • Lava Wave - If a player touches a moving Lava Wave, the lava inflicts 100000 Fire damage, 30000 Fire damage every 1 sec. for 5 sec., and knocks the player back.
• Engulfing Flame - Ragnaros periodically engulfs a random third of the platform in flames, immediately inflicting 70000 Fire damage to players caught in the conflagration then again inflicting 70000 Fire damage one second later.
• World in Flames - Ragnaros periodically casts Engulfing Flames on a random section of the platform every 3 sec for 9 sec.
• Molten Seed - Ragnaros creates Molten Seed at the location of 10 random players from the nearby lava, inflicting 55000 Fire damage to all players within 6 yards of a seed. After 10 sec the Molten Seed bursts into a Molten Inferno. In 25 player raids, Ragnaros targets 20 players.
  
  • Molten Inferno - When Molten Seeds burst they create a Molten Inferno, inflicting 135000 Fire damage to all players and creating a Molten Elemental. The damage inflicted decreases the farther away the player stands from the seed.
  • Molten Elemental - A Molten Inferno creates a Molten Elemental, which attacks and fixates on a random player.
    
    • Molten Power - Molten Elementals within 6 yards empower other Molten Elementals, increasing their damage dealt by 25% and granting immunity to snare and stun effects.
• Magma Blast - Ragnaros blasts magma at his current target if he cannot reach and melee them, inflicting 75000 Fire damage and increasing Fire damage taken by 50% for 6 sec.

Intermission: Denizens of Flame!
At 40% health Ragnaros casts Splitting Blow, burying Sulfuras into the platform and creating Sons of Flame across the platform. Ragnaros submerges for 45 seconds or until the players destroy all the Sons of Flame, whichever comes first. Ragnaros also creates two Lava Scions that attack the players.

• Splitting Blow - Ragnaros buries Sulfuras within the platform, inflicting 70000 Fire damage every 1 second to players within 6 yards and creating eight Sons of Flame that attempt to reach the mighty hammer.

Son of Flame
Sons of Flame cross the platform and attempt to reform with Sulfuras. A Son of Flame that reaches Sulfuras causes a Supernova.

• • Burning Speed - For every 5% of their remaining health above 50%, Sons of Flame move 75% faster. When players reduce a Son of Flame to below 50% remaining health, the Son of Flame loses the Burning Speed effect.
  • Supernova - When a Son of Flame reaches Sulfuras it explodes in a Supernova, inflicting 125000 Fire damage to all players.
• Lava Scion - One Lava Scion forms on each side of the platform.
  
  • Blazing Heat - A Lava Scion inflicts a random player with Blazing Heat, causing the player to create a trail of Blazing Heat in their wake. Blazing Heat inflicts 50000 Fire damage every 1 sec on players standing within the trail, and heals Sons of Flame and Lava Scions within the trail for 11% every 1 sec.

Stage Three: Begone From My Realm!

• Sulfuras Smash - Ragnaros faces the location of a random player and prepares to smash Sulfuras on the platform. The impact of Sulfuras inflicts 550000 Fire damage to any player within 5 yards of the impact, and creates several Lava Waves which move out from the point of impact.
  
  • Lava Wave - If a player touches a moving Lava Wave, the lava inflicts 100000 Fire damage, 30000 Fire damage every 1 sec. for 5 sec., and knocks the player back.
• Engulfing Flame - Ragnaros periodically engulfs a random third of the platform in flames, immediately inflicting 70000 Fire damage to players caught in the conflagration then again inflicting 70000 Fire damage one second later.
• World in Flames - Ragnaros periodically casts Engulfing Flames on a random section of the platform every 3 sec for 9 sec.
• Summon Living Meteor - Ragnaros calls down an increasing number of Living Meteors. The Living Meteor's impact inflicts 65000 Fire damage to players within 5 yards of the location.
  
  • Living Meteor - The Living Meteor fixates on a random player and chases them.
    
    • Meteor Impact - Any player within 4 yards of a Living Meteor triggers a Meteor Impact, inflicting 500000 Fire damage to players within 8 yards.
    • Combustible - Attacking a Living Meteor causes Combustion, knocking it back several yards from the attacking player. Triggering Combustion removes the Combustible effect for 5 seconds.
      
      • Combustion - Attacking a Living Meteor causes Combustion, knocking it back several yards from the attacking player. In Heroic Difficulty Combustion inflicts 2000 Fire damage every second on the triggering player. This effect stacks.
    • Lavalogged - If a Living Meteor touches a Lava Wave, the meteor gains the Lavalogged effect for 1 min.
• Magma Blast - Ragnaros blasts magma at his current target if he cannot reach and melee them, inflicting 75000 Fire damage and increasing Fire damage taken by 50% for 6 sec.

Stage Four: The True Power of the Firelord!
The Firelord unleashes his full power and is able to move freely around the platform. Players have the aid of powerful heroes of Azeroth to support them.

• Superheated - Ragnaros unleashes his full power and becomes Superheated, inflicting 4000 Fire damage every 1 on all players and increasing the damage dealt by Superheated by 10%. This effect stacks.
• Empower Sulfuras - Ragnaros channels his flames upon Sulfuras. After 5 sec. of channeling, Sulfuras becomes Empowered and Ragnaros' melee attacks unleash the Flames of Sulfuras, inflicting 500000 Fire damage to all players.
  
  • Flames of Sulfuras - With Sulfuras empowered, Ragnaros' melee attacks unleash the Flames of Sulfuras, inflicting 500000 Fire damage to all players.
• Dreadflame - Ragnaros stomps and creates a Dreadflame at two nearby locations. The Dreadflame multiplies rapidly and spreads across the platform. Dreadflame inflicts 60000 Fire damage and 4000 Fire damage every 1 sec for 30 sec if a player touches the fire. In 25 player raids, Ragnaros creates six Dreadflames.
• Magma Geyser - Ragnaros will target a Magma Geyser whenever he notices four players in a cluster together. The Magma Geyser inflicts 55000 Fire damage every 1 sec., knocks players back, and destroys any Breadth of Frost within 5 yards. In 25 player raids, Ragnaros uses Magma Geyser on clusters of 10 players.

Cenarius
Although the son of Malorne and Elune, the mighty demigod and druid patron Cenarius was cared for in his youth by the Dragon Aspect Ysera. Cenarius supports the raid by using his powers over nature to freeze Living Meteors and reduce the damage caused when Ragnaros is Superheated.

• Breadth of Frost - Cenarius forms a Breadth of Frost at a nearby random location. Any Living Meteors that enter the Breadth of Frost freeze and take 15000% additional damage from players. Breadth of Frost grants immunity to Superheated damage and removes the Superheated debuff from players standing within the area.

Arch Druid Hamuul Runetotem
Apart from being revered by his fellow tauren, the greathearted archdruid Hamuul Runetotem is also a celebrated leader of the Cenarion Circle. The wise tauren assists the raid by harnessing nature's fury and causes roots to erupt from the ground to entrap Ragnaros.

• Entrapping Roots - Arch Druid Hamuul Runetotem forms Entrapping Roots at a nearby random location. If Ragnaros enters the area of the Entrapping Roots, he becomes stunned for 10 sec and takes 50% additional damage while stunned.

Malfurion Stormrage
One of the most powerful druids ever, Archdruid Malfurion Stormrage has been instrumental in protecting Mount Hyjal from Ragnaros's fiery elemental forces. The legendary archdruid helps the raid by protecting heroes from the all-consuming Dreadflame attacks.

• Cloudburst - Malfurion forms a Cloudburst. The player who interacts with a Cloudburst become surrounded with a Deluge. Deluge grants the player immunity to Dreadflame damage, and allows the player to extinguish any nearby Dreadflame. In 25 player raids, up to three players may use a single Cloudburst.
  
  • Deluge - The Deluge grants immunity to Dreadflame damage, and allows the player to extinguish any nearby Dreadflame.