I made a video when it came out for all bosses there, maybe it’s helpful for you to see how i managed to do each phase, see what i did differently. I’m sure the talents are different now though:
https://www.youtube.com/watch?v=rsKoX5OYc9M
I only know how to play ret, so i had to learn when the mage tower came out in 9.1.5 all the other specs… to get the book mount (best mount xD).
Added tips in the Description of the video at the time, i’ll add them here too, but IDK how many of them still apply exactly like that, but feel free to browse through them:
Tips:
a) Be mindful of the sting cast by the archer, dispel it asap, especially if it ends up on yourself, usually an ally will take it, but they take dmg as well, i like to get it and insta-dispell it sometimes.
b)Also the archer will teleport behind yourself, so you can control where he ends up by positioning yourself.
c) The most dangerous pack is the 2nd to last one, use most of your CDs there, the last pack is dangerous too but more manageable.
d) The phases between 1st and last ones are pretty easy, i never died there, you have plenty of time to wait for cds if needed, so don’t rush and you’ll be fine.
e) 2nd phase where you’re surrounded by orbs, i recommend waiting for them to get closer and then drop your aoe to whittle them down, once they are close to dying, bubble and go to town on them before it ends.
f) The phase right before the last boss, where you have to heal the adds and your allies, heal the first set, then let an archer from the 2nd set to get to the boss, it will cause a RP event to take longer before it’s spawned to be killed, giving you enough time to drink (do this first as healing your allies places you in combat) then heal your allies, and able to get holy power on the add before the boss gets active.
g) The boss phase, focus more on keeping your allies topped, yourself around 40-50%, but you need to take note of when the boss will jump on you versus when the explosion will occur, drop to around 30% when the explosion occurs, but have something to instantly heal yourself if the boss jumps on you right after.
h) Your dps isn’t much here, so don’t go out of your way to deal much dmg, getting more space will be more valuable in the end, keeping everyone alive including yourself will matter more.
i) Start the boss by using your cd’s asap, whatever you can in 1-2 gcd’s then stun the boss immediately, so you get him before he casts the leap and makes the dmg zone.
j) Worry more about healing than saving your mana, having 50% mana but dying or your allies dying will not be helpful one bit.
k) Use your hammer of justice to stun the boss on cooldown, don’t be like me and forget about it.
Talents:
15 - Light’s Hammer - best aoe healing and dps combo talent
25 - Saved by the Light - very good talent that can save yours or your allies lives
30 - Blinding Light - good for interrupting the melee adds knives aoe / last boss you can change to Fist of Justice to use more often on boss, to delay him
35 - Unbreakable Spirit - i forgot to change back to it for first areas, but it’s the best option here, Cavalier for last boss to get faster out of the dmg zones if needed
40 - Divine Purpose - procs often enough to be useful
45 - Avenging Crusader - good for any phase as it pretty much tops off you and your allies
50 - Beacon of Faith - easier to top off your allies with 2 beacons