Ulduar: Razorscale Boss Strategy Guide - World of Warcraft

General Information

Razorscale is the 3rd Boss of the newest World of Warcraft raid instance Ulduar. Unlike the past Boss, Ignis the Furnace Master, his HP is much lower. He only has 12.500.000 Health Points on Heroic and 3.900.000 Health Points in normal mode.

Abilities

Phase 1 Abilities (Air phase)

• Devouring Flame: Spits a Lava Bomb at an enemy, inflicting 8788 to 10212 Fire damage and deals 8788 to 10212 fire damage every 1 second to anyone staying within 6 yards of the impact, lasts 25 seconds. 1.5 sec cast
• Fireball: Inflicts 12025 to 13975 Fire damage to an enemy.

Phase 2 Abilities (Ground Phase)

• Flame Buffet: Increases the Fire damage an enemy takes by 1500 for 1 min. Stacks up to 99 times.
• Wing Buffet: Knocks back enemies in a radius around the caster. 1.5 sec cast
• Flame Breath: Inflicts 17500 to 22500 Fire damage to enemies in a cone in front of the caster. 50 yd range, 2.5 sec cast
• Devouring Flame: Spits a Lava Bomb at an enemy, inflicting 8788 to 10212 Fire damage and deals 8788 to 10212 fire damage every 1 second to anyone staying within 6 yards of the impact, lasts 25 seconds. 1.5 sec cast

Achievements

As Ignis the Furnace Master, the Razorscale encounter is also tied to some Achievements.

Heroic

• Heroic: A Quick Shave - Defeat Razorscale without allowing her to fly into the air more than once on Heroic Difficulty.
• Heroic: Iron Dwarf, Medium Rare - Defeat 50 Dark Rune Guardian Dwarves with Razorscale's Flame Breath on Heroic Difficulty.

Normal

• A Quick Shave - Defeat Razorscale without allowing her to fly into the air more than once on Normal Difficulty.
• Iron Dwarf, Medium Rare - Defeat 25 Dark Rune Guardian Dwarves with Razorscale's Flame Breath on Normal Difficulty.

The Encounter

The Razorscale encounter is split up in to two phases.

Phase 1

In the first Phase, Razorscale will be in the air. While flying, she will bomb the raid with Devouring Flame and Fireball. During this phase, the friendly Dwarf NPCs will collect mechanical parts on the ground and repair the nearby turrets.

After the repairs are done, the NPCs will chain Razorscale and stun her for a few seconds. This repeats until she’s at 50% of her HP

Phase 2

Once Razorscale is on 50%, Phase 2 will emerge. Razorscale will land and you have to beat her on the ground. She will keep Devouring Flame and get 3 new abilities: Flame Buffet, Flame Breath and Wing Buffet.

Tactic and Setup

Setup (25)

• It's recommended to use 4 tanks for this encounter, as there are 4 zones where the adds spawns.
• 6 Healers are absolute minimum, if you're in full T7 gear. Probably 7, if you're guild isn't top equipped
• Take a good balance of Melee and Range damage dealers. While melees can't do good on the boss but they do good on the add spawns. Having ranged damage dealers is good too for the Dark Rune Sentinels, as they can pretty one-shot anything that's no tank.

Setup (10)

• 2 Tanks
• 2 Healers
• 2 Melees DDs
• 4 Ranged DDs
• 1 Shaman for Heroism (either as Healer, melee or Ranged DD)

Phase 1 (Air)

Start the encounter by talking to the expedition commander. Your task is to defend the NPCs while they are repairing the turrets. Your focus lies on killing all the adds and avoiding the devouring flames from Razorscale. You have to move immediately out of it, if you got hit to avoid to getting to much damage.

There are 4 zones (on normal only two) where adds spawn and you need tanks in any of them.

The Dark Rune Sentinels (390.600 HP) hit for 9.000 on Plate and 30.000 on Cloth. So it's vital to tank them as far as away from the raid as possible and nuke them from range.

The Dark Rune Watchers ( 221.800 HP) are casting Chain Lightenings on the raid which hit for 10.000 damage. They have a very high range, but can be interrupted. This being said, it's obviously that you should interrupt them whenever possible. Best is to make a rotation, so no interrupts are wasted.

One very often reason for players dying is the combo of Fireball and Lightening Chain, where each hits for approx. 10.000 damage. So they need to be keep up at least at 80% Health Points.

The Dark Rune Guardians (277.200 HP) doesn't seem to have anything special, just tank and spank them.

All adds also get additonal damage if they are inside the Devouring Flame area of effect, so if you place them good (so the adds are inside the AoE and your DDs outside), it can quicken up this phase pretty much. Dark Rune Watchers are somewhat harder to get in, as they often stop for casting. 

As the turrets get repaired you can start using them. They will fire a harpoon and chaining Razorscale. Once all 4 are repaired and fired, Razorscale will come to the ground. Once on ground, she will be stunned shortly. At this time, blow up all your cooldowns for maximum dps. The ground phase last ~30 seconds, so it's perfect time for Heroism/Bloodlust + blowing up all cooldowns.

If you don't get her to 50% before she flies up again, repeat the process.

Phase 2 (Ground)

When you get her below 50%, she will land permanently. Let the tank her away from the raid (she shouldn't be facing the raid) to avoid her breathing in the raid (we already know this from other dragons, don't we?). From now on it's a simple tank and spank fight and just avoid devouring flame.

Only important thing here is: DPS. The more dps you have, the less Flame Buffet your tank has, the less damage he takes, so high dps is very important here.

She has an enrage timer of 10 minutes.

Hard Mode

Hard Mode consits by getting her to 50% in only one grounding/stun phase in Phase 1. So you need to stack dps, max dps and blow the shit out of her before he flies up again.