Flame Leviathan
Videos
Fusion 10-man (narrated):
http://warcraftmovies.com/movieview.php?id=103487General
This is a vehicle fight.
He has about 15.5 million HP on 10-man and about 62.5 (or 30?) million on 25-man.
You never tank him. Instead, you kite him around using your vehicle abilities to kill him.
Abilities
Every 30 seconds he will switch targets to another siege vehicle, mark them, and follow them around. If you do not have two siege vehicles active then he will pick a different unit.
He has a soft enrage due to
Gathering Speed. You have to kite him, thanks to
Battering Ram, and it becomes harder and harder to get away from him even with help from
Steam Rush.
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Flame Vents - Inflicts 3,000 Fire damage to enemies around the caster. Lasts 10 seconds. 50 yard range. Interruptable.
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Battering Ram - a melee range attack, Rams the target, dealing damage and knocking it forward. Deals 100% Weapon damage and debuffs the target, causing them to take 50% more damage for 20 seconds.
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Gathering Speed - Increases his speed by 5%, stacks up to 20 times. The stack is reset when he is stunned by Overload Circuit.
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Rockets - He also fires rockets constantly at the raid, doing about 700 damage each time they land (about once every 1-2 seconds).
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Turrets - He has 4 turrets. Passengers in the demolisher can be launched at him where they can destroy the turrets and then hit the
Overload Circuit: stuns Flame Leviathan and causes him to take 50% more damage for 10 seconds.
Vehicles
The vehicles have a base HP that then increases based on the ilvl of your gear (tip: stop DE'ing trash epics with high ilevels and save them for Ulduar!)
How Vehicle Gear Scaling works
Shirt, tabard, offhand, and ranged/relic slots do not affect vehicle scaling. - This does mean an ilvl 226 1 hand weapon is better than an ilvl 213 2 hander. - Enchants and gems do not affect it either, it is based solely off item level. - An ilvl 200 blue is equivalent to an ilvl 187 epic. Experimenting with other combos of blue/epic gear gave me reasonable confidence that a blue item is equivalent to an epic 13 levels lower. - An empty slot is equivalent to an ilvl 0 epic - this does mean equipping an ilvl 0 blue such as Insignia of the Scourge will be worse than having nothing at all in the slot.
Empirically, taking the average ilvl of your gear (subtract 13 for each blue, 26 for each green) and dividing by 15 (total number of applicable slots), then subtracting 170 will give you the percent increase of the health points of your vehicle compared to base - it cannot be decreased though (naked is a 0% increase).
Thus: All ilvl 200 epic gear => 200-170 => 30% increase in vehicle hp. All 226 would be a 56% increase.
I did some limited testing of vehicle damage:
Naked: 2148 average attack with 171 attacks Avg 213 gear: 3038 average attack with 160 attacks 3038/2148 = 41.4% so that seems to be within the margin of error for the expected value of 43%
Salvaged Siege Engine
This vehicle demolishes towers as you clear the gauntlet and kites the Flame Leviathan.
It can carry a passenger.
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Ram - 15 yard range, 4 second cooldown, instant. Rams any enemies in front of the demolisher, dealing 22,501 to 27,501 damage and knocking them back. Also deals 2,850 to 3,150 siege damage to buildings.
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Electroshock - 20 energy, 10 second cooldown, instant. Shocks all targets within a 25 yard cone in front of the caster. It also interrupts spellcasting and prevents any spell in that school from being cast for 4 seconds.
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Steam Rush - 40 Energy, 15 second cooldown, instant. Put the steam engine into overdrive for a short duration, rushing forward, dealing siege damage and knocking back enemies.
Passenger Abilities
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Anti-Air Rocket - Instantly fires an explosive missile directly forward, detonating when it has travelled 100 yards, hitting any enemies within 10 yards.
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Fire Cannon - 20 Energy, 10-70 yard range, Instant. Fires a cannon blast.
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Shield Generator - Activates the shield generator on the Siege Engine, absorbing a limited amount of Physical, Fire, Frost and Arcane damage taken for 5 sec.
Salvaged Demolisher
This vehicle moves slowly but has ranged attacks and can even catapult its passengers.
It can carry a passenger, who can grapple the pyrites from the ground and loads them one by one as abilities that deplete them are used. The primary use for them is giving 10 charges to the big nuke.
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Hurl Boulder - 10-70 yard range, instant. Hurls a massive boulder into the distance, dealing 27,000 to 33,000 damage to enemies within 8 yards of the explosion. 10-70 yd range.
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Hurl Pyrite Barrel - 5 Energy, 10-70 yard range, instant. Hurls an orb of blue pyrite into the distance, dealing ?? damage, but consumes ammo.
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Ram - 15 yard range, 4 second cooldown, instant. Rams any enemies in front of the demolisher, dealing 19000 to 21,000 damage and knocking them back. Also deals 2,160 to 2,640 siege damage to buildings.
* Launch Passenger - launches the Demolisher's passenger into the air.
Passenger Abilities
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Anti-Air Rocket - 40 yard range. Instant, 1 second cooldown. Fires an explosive missile directly forward, detonating when it has traveled 50 yards, hitting any enemies within 10 yards.
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Grab Crate - 40 yard range. Instant. Use your hook and chain to grab the targeted crate.
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Reload Ammo - Loads 20 rounds into the demolisher's ammunition cartridge. Requires Liquid Pyrite.
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Increased Speed - instant. Injects liquid pyrite into the engines, increasing movement speed by 100%. Lasts 20 seconds.
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Load into Catapult - instant, 30 second cooldown. Load yourself into the catapult arm, using yourself as ammunition.
Salvaged Chopper
This motorcycle model is very fast and moves very adroitly (it can strafe, for example.)
It can carry a passenger.
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Sonic Horn - Instant, 20 energy. Sends a wave of force in front of the motorcycle, causing 6,300 to 7,700 damage to all enemy targets within 35 yards in a frontal cone.
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Tar - 5% Base Mana, Instant, 15 second cooldown. Drops a pool of tar for 45 seconds that slows the movement speed of enemies wihtin 10 yards. Tar can be ignited.
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Speed Boost - Instant, 50 energy. Fires the fuel injectors on the bike, increasing its speed by 100% for 5 seconds (no cooldown).
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First Aid Kit - Heals your passenger fully over 4 sec. 1 min cooldown.
Hard Mode
The Hard Mode of this encounter is when you destroy the towers in the Area prior to the fight. Each tower destroyed will give the Flame Leviathan an unique ability based on which tower you destroyed.
* Thorim's Hammer - Deals Stormstrike damage to all enemies nearby. Additional damage is taken if directly under the impact location.
* Mimiron's Inferno - Deals 150,000 Fire damage to all nearby enemies and leaves a flaming blaze behind
* Hodir's Fury - Deals 150,000 Frost damage to all nearby enemies, entombing them in ice
* Freya's Ward - Deals 13,500 to 16,500 Natures damage to all nearby enemies and summons guardians of nature to surround the enemy
The Fight
The fight begins when you tell an NPC that you're ready. This makes the vehicles usable, although no mobs will attack you until you leave the starting area.
The Gauntlet
Once you are in your vehicles, you leave the entrance and head north. Nothing is likely to kill you as their damage is very low and it's mostly a speed bump. The AE abilities of the Choppers and Demolishers make fast work of the small mobs.
One thing to note: the Iron Colossus mobs cast Ground Slam. It's a 7-second, interruptable cast, that deals a lot of damage. The Siege engines can interrupt it, or you can outrange it.
As you progress, the Siege Engines should be destroying the towers, since this stops the dwarves from continuing to spawn from that tower. There's no need, however, to clear the entire area unless you want to: any remaining mobs will leave you alone and will not add when you engage Flame Leviathan.
At the end of the gauntlet, on the right, is a repair circle. Run your vehicles over it to get healed to full before you engage the final packs before the boss.
Repair now, because the circle gets blocked off and cannot be used during the boss fight.
In addition stock up on Liquid Pyrite before you pull the last pack: shoot the choppers out of the air and have the Demolishers' passengers use Grab Crate to stock up on five barrels.
The Flame Leviathan
Shortly after the last Iron Colossus dies, Flame Leviathan will come out.
Your motorcycles should drop tar in front of the door and your Demolishers should ignite it so he takes damage immediately (this also makes him activate immediately.)
Siege Engine Tactics
The fight is the Siege Engines kiting him, keeping in front of him with Steam Rush as necessary. If you get too close, he will hit you with Battering Ram, and its debuff stacks.
Every 30 seconds he will switch targets to another siege vehicle, mark them, and follow them around. If you do not have two siege vehicles active then he will pick a different unit.
Use Electroshock to interrupt Flame vents. It helps reduce the damage done to the Choppers and Demolishers when they're in range. He will cast two jets in between every target switch, so you can use the pattern of "shock shock run" and substantially reduce both raid damage and the risk to yourself.
Chopper Tactics
Work with your Siege Engine drivers to establish a kiting path, and drop Tar in it. This slows him slightly, and also deals significant damage when ignited.
You can use Sonic Horn while Tar is on cooldown to deal additional damage.
You have very low health, so be careful to never get hit by Battering Ram and avoid excess Flame Vents damage.
Demolisher Tactics
Your passenger needs to use Reload Ammo to charge up Hurl Pyrite Barrel, which deals significant damage.
If you are destroying turrets, you will also want to get your passenger up onto Flame Leviathan and then be ready to pick them back up again later.
Advanced Tactics
Please note that it's likely that he will always be killable on easy mode without doing this more than once:
Demolishers can launch their passengers onto the Flame Leviathan. You want to launch both a dps and a healer.
Once they are there, they need to destroy a turret and then, when he is standing in flaming Tar, use Overload Circuit. The Demolishers need to pelt him with Hurl Pyrite Barrel as well.
This stun also resets his stacks of Gathering Speed.
When Overload Circuit is done, the players are ejected from Flame Leviathan and the motorcycles need to zip over quickly to pick them up, since they will die quickly otherwise. Then they can get back into the Demolishers again to take out another turret.
