As azshira said above, the main part of this fight is the hatchlings that must be handled by your tanks. These will be picked up by standing near the eggs that are dropped.
Also, the best DPS for flying in your group I would suggest your mage going fire, or having your warlock go affliction. As a fire mage, you start will your normal rotation, but once you reach 10+ stacks of the haste buff, you can just spam pyroblast and use combustion once she is grounded. As affliction, I'm not so sure about the DPS but I believe it is the same rotation just with lots of buffs.
When starting the fight, stack up as she will do about 50% of your health as fire damage. Heal through this then get to your positions. Assign one healer to each of your tanks, and if you don't feel comfortable two healing you can use a third to run around and help out. You will want to assign interrupters and dpsers for each of the sides. You will need two people at the back of the room (where you enter) and another two at the front of the room. These two people should be DPSing the initiates while interrupting the spell "fieroblast". The initiates will cast spells in a way that it will go brushfire>fieroblast>brushfire etc. Brushfires are not interruptable and deal a fair amount of damage so they just need to be avoided.
Now, as for your flying person(s). If you choose to two heal this boss, you can send a second DPS up in the air. This is done by picking up the feathers that are dropped as Alysrazor flys through the middle, as well as at the start of the encounter. She will do this every minute or so and drop 8 feathers. When this happens, she will do a cleave so you can't be in the middle when she comes through. At the start of the encounter your flying DPS will need to pick up 3 feathers each, and fly into the air to attack Alysrazor. They will need to avoid the cloud looking things that deal damage, while collecting rings to keep their flying buff, and damage increase. The more rings you get, the more DPS they will do during the burn phase.
As for the rest of your raid, if there is any feathers left over (there will be 2 if you send two people into the air), I would suggest letting the two healers take one each first. The next time Alysrazor drops feathers, have DPS and the tanks take one each. These will increase your movement speed by 30% and are extremely useful during the tornado phase. Now, onto the tanks.
When tanking this encounter, as stated above you need to think like a DPS. This means full DPS glyphs, no self healing with WoG. The 3 gylphs you should use as a paladin tank are Shield of the rightousness, judgement and seal of truth. You and your fellow tank will want to reforge into expertise and hit. Seeing as these adds are only level 87, you don't need to be full hit capped. If you look in your character tab, it can tell you your chance to miss. Also, don't forget because you are in front of the boss, you can go above 26 expertise and still gain DPS. Another good idea for this fight is to use DPS-Like trinkets. It is vital that these hatchlings die, or you will wipe.
These hatchlings will drop as eggs at first, and after above 5 seconds or so, will crack and open, fixating on the closest person to them. Because of this, the two tanks must stand near the eggs to get fixated. Once fixated, you will deal 1000% increased damage. I suggest at the start when Alysrazor flys through the middle, that you hit her 3 times with crusader strike to build holy power so you are ready for the adds.
When the hatchlings are hatched, pull them back from where they are so you are between the two worms (I will explain these soon), but not close enough they can hit you with their breath. Pop wings, SotR, DP, SotR again and then go with your normal priority system for tanking. These birds also have buffs that they will gain or lose depending. One is gold, one is red and one is blue. The gold buff means that the bird is fed, and will attack you quite happily for a while. The blue buff means the bird is hungry and has a chance of causing the red buff which is an enrage effect. This buff called tantrum increases the birds attack speed and damage by 50%. You need to remove this ASAP. This is done by feeding the bird the lava worms that spawn with the birds.
8 of these will spawn in total. 4 at the start, and another 4 after a short while. These worms will spawn in a square-like shape around the middle. Position yourself between two, and have your fellow tank do the same between the other two. The idea of these worms is to utilize them every 20% of the hatchlings health. This means, if you are killing the bird fast, you will never have enrage. This also means if you or the other tanks DPS is lacking, you can either feed the worms early and risk having a tantrum later on, or you can hold off and hope the bird doesn't enrage. Because of this, it is vital that the tank dps is up to par.
To feed a worm to the bird, just move the bird close to the worm, and it will then jump and eat it. Be careful doing this because the worms do a 360 conal constantly that deals a LOT of fire damage. Posistioning at first may be hard, but you will get the hang of it. Also, a very useful tip is when feeding the worm to the bird, don't wait for it to run back to you. Stay right on it and keep DPSing. Any lost DPS time and you risk having the bird up too low and it may lead to a tank death or even a wipe. Feed the bird every 20% and by the time p2 is about to start, the bird should have 5-10% health left.
Now, for phase 2. This is the tornado and burn phase. Alysrazor will come down to the middle and begin spawning tornados. This will travel either clockwise or anticlockwise in a circular shape. They will also kill you very quickly. NOTE: For this phase, your flying players MUST come down a few seconds before it starts as they will lose their flying buff. The easiest way to avoid these spinning tornados of death is to begin following one. They move very quickly, but by this time you and the rest of your raid should have at least 2 feathers each (60% movement speed). Follow one of these tornadoes till one going the opposite direction goes past to the right of you. As soon as it does, immediately begin to follow that one. Basically you will just run a constant loop of following tornadoes until this phase is over.
Rings of fire will also spawn, which are the same as the ones in the air that the flying players must go through to stack their buffs for damage will also spawn during this phase and it is vital that your flying players get at least one each to keep their stacks. If they successfully grabbed 25 stacks in the air phase, then prepare to see some serious boss damage.
This is when your DPS must burn the boss. She will take 50% increased damage and your spells will regenerate 10% of your total mana. Because of this, it is vital that your healers spam skills to fill their mana up to full before the next part of the encounter. She will also spawn two adds on either side of her. These will channel a beam that will ignite her energy shortening the length of this burn phase. Use your two tanks to ensure these adds do not channel on her. Sit one on each add and interrupt/stun/blood elf racial each of their casts. Never let them channel. If you can't get one, let a DPS know so they can help. This is the time when you will want to blow bloodlust. Both of your flying players will want to blow all their cooldowns. With 210% haste, 75% crit and 50% damage from just these buffs, you should be able to take the boss to at LEAST 50%. The boss will also be passively regenerating 3 energy every 2 seconds.
Once she reaches 50 energy/100 she will reignite, but be unable to fly. The two little adds will fly away, and your tanks must take turns with the boss. The first tank must move in front of her, face her away from the raid and blow a big CD. She will begin to cleave the tank stacking a 10% physical and fire damage taken debuff. She will also deal heavy AoE fire damage to your raid. This is the time when you should be rotating cooldowns such as barrier, aura mastery or tranquility. Once your first tank is up to 6 stacks, the second tank must taunt off and tank her until she reignites and flies away. Once the second tank taunts, the first tank can run into the ground for AoE healing. The second tank too must blow a big cooldown. Once Alysrazor reaches 100 energy, she will reignite and be able to fly. She will deal a big AoE blast for about 50% of the raids health before flying off, so ensure the tanks are topped up. During this phase, the DPS can still be killing the boss so get her as low as possible. After this part, the fight will begin again. Eggs will drop, initiates will spawn etc. If you can manage to get to this part of the fight, you will grab a kill very soon.
This fight is all about controlling the adds and avoiding the fire. If you can manage these two things you should be able to kill this boss fairly quickly, though some parts of the fight take a little getting used to. If you have any questions, just ask or PM me. Also, if you want a more detailed guide, visit
www.learntoraid.com