I had this idea for some time now, but needed more raid experience to really start it. First of all, most of my experience comes from 10-Man. Guild stability is an issue lately, with the "post Naxxramass apathy" that fell upon the game, and we're having difficulties to get a regular 25-Man roster.
The idea here is to give a few tips for each boss (and the trash before sometimes). Tips will be for healers, and from my point of view, hence a healing paladin view of them. I hope they can be useful for other healers, but obviously paladins will probably find more info here :)
Most of these guides won't detail the fight themselves, and they'll be easier to read if you've already experienced the fights. But comments are here to collect any question.
So enough with the talk and here start the guides with the 2 first bosses of Ulduar.
This is a semi-joke as most players won't have anything to do in this fight that is linked to their characters. Most of us stay in vehicles and don't even push a heal or dps button for the whole fight.
This is a sure fact for tanks, though 2 (4 in 25-Man) players will be sent on FL to shut down the towers and stun it for a little bit about 2 times during the fight. In 10-Man you'll most of the time send 2 dpsers, in 25-Man you often send 1 healer with 3 dpsers (and the healer can be you).
You have to clearly know who's going to be sent on the Leviathan, and they should be fully buffed (BoK is mandatory !). They could have to endure heavy damage is they stand on the ground a little too long after the Leviathan global shut-down, and before they are picked-up by motorcycles (motorcycle pilots can heal their passenger before giving it back to the Demolishers). Hence, the more health they have, the best chance they have to survive, and you don't want to lose them.
To sum it up, buff the people being sent on the Leviathan, heal if you are part of them.
From a healer point of view there are 3 different "phases" in this fight.
Phase 1 is when Razorscale is flighing.
There will be adds that your tanks will pick-up. Keep your tanks up, and watch the raid that will take heavy damage with whirlwinds and chain lightnings. You also have to watch for Razorscale Fireball and Devouring Flame. I hope for you that people won't stay too much in the blue devouring flame patches on the ground or keeping them alive could start to be difficult.
In this phase depending on raid healers I often keep my Beacon of Light on myself and heals the MT in charge of the Sentinels (one of our tanks take both Sentinels to avoid them whirlwinding the raid). That way I don't really have to watch my health and can keep my MT targeted at all times, and sometimes send Holy Shock here and there in the raid.
Flash of Light and Holy Shock should be your main tools in this phase.
Phase 2 is when Razorscale is on the ground for 30s.
If there are still adds, let them live, and heal the tanks. The whole raid should concentrate on Razorscale. When she will take flight again, she will do two things. She will flamebreath in front of her, probably killing the remaining adds and doing heavy damage to your tanks. And she will Wing Buffet, aoe knock-back interrupting your heals. The wing buffet happens a few seconds after the breath, be ready to have your tank fully healed in these few seconds. There should be very little raid damage during this part. If you have two tanks, put your Beacon on one, heal the other.
Flash of Light and Holy Shock should be your main tools in this phase, with an occasional Holy Light on a tank if too many adds were left alive.
Phase 3 is from 50% life of Razorscale to its death, when she's definitely on the ground.
Two tanks switching on Razorscale regularly, heavy damage on the tank, a bit of raid damage mostly avoidable (the Fireballs and Devouring Flames or phase 1 are back). These are the characteristics of this phase, mostly a burn-her-down and hope you make the timer (which shouldn't be too hard now ^^).
It's probably not very usefull to heal "both tanks" at the same time as only one will take damage at some time. Once again, chose how you use your beacon depending on your raid (if you're helping with raid healing or purely tank healing mostly). I often use it on myself if I'm confident in our healing, just to ensure I don't die stupidly on a double fireball while I'm casting Holy Lights on the tank. If there is need of me on raid healing, then Beacon on my tank is the way to go.
You'll most probably use Holy Light much more in this phase than the two first ones. Use your Divin Plea whenever you can during the fight to try being full mana when you start this phase. Having a Light's Grace buff stacked during this phase can help you a lot to react quickly to Razorscale tank changes.
For all fights
As always, keep Sacred Shield up at all times on your tank, and Judge often (Wisdom, or Light if you're the only paladin) to keep your Judgements of the Pure up at least (each 20s should eb your aim when you can to maintain the debuff up).
That's it for today. Ignis soon, and you can expect at least up to Freya next week. I'll keep all the posts linked in the upcoming ones.