The Clessington Will

I liked how you and all the NPC's use human's racial multiple times to free yourselves.

The NPC dialogue that goes along with this quest:

Spoiler

[npc=198984] says: With your help, friend, I think we can take down that barrier!

[npc=198988] says: Slow down, rich girl, you'll get yourself killed!

Cecilia runs ahead, with the player following behind. Together they take down the Shadow Barrier blocking the entrance of the Northshire Abbey. They immediately are confronted with the sight of [npc=199006] surrounded by a dark swirl of magic.

Cecilia Clessington says: Father, enough! Is your lust for power really worth all this pain?

Count Clessington says: Cecilia, you've never understood. Onyxia promised our family power. We deserve to rule!

Master Mathias Shaw and [npc=198988] run inside the Main Hall, ready to assist as Count Clessington begins his attack.

Count Clessington yells: I've waited long enough! The kingdom will be mine! FEEL THE POWER OF ONYXIA!

Count Clessington says: You cannot resist me! You cannot fight back! COME, DEFIAS!

Vanessa VanCleef says: You're done, rich man! We're not giving up.

Count Clessington repeatedly calls others to fight for him, and with each wave he uses the power of the amulet against the player and their companions, using the [spell=398311] to stun them. Luckily, this is a group with a strong Will to Survive, and they break out of the spell almost immediately each time. With the nearby attendants and Defias slain, he calls upon some of the confused recruits. Fortunately, they are able to snap out of his hold and are allowed to flee.

Count Clessington yells: NO! I WILL RULE! I WILL BE KING! COME, FOOLS, FIGHT! FIGHT!

[npc=203457] says: Down with, uh.... everything!
Confused Recruit says: Why am I so angry? I just need to go cool off...

[npc=200405] says: Who are you? Get out of my face!
Confused Recruit says: I'm sorry, I don't know what came over me!

With no one left to put between himself and the group, he lowers his defensive barrier and goes on the attack, despite being outnumbered and outmatched.

Cecilia Clessington says: No more, father! Please, please just stop.

Count Clessington yells: NEVER! NEVER...
Count Clessington yells: NO! I CANNOT FALL! ONYXIA PROMISED MORE... MORE...

Count Clessington falls, slain at last, and Cecilia runs over to grieve her father. As she kneels down, an unsettling voice seems to echo out of nowhere.

Cecilia Clessington says: Father...

[npc=199008] says: Power... all yours...

--
--
Brilliant storytelling - everything has circled back:

Spoiler

The most striking part of this scene is knowing that Cecilia has just watched her father be brutally killed for the good of the Alliance - Stormwind in particular. Ironically, one of the few people who would understand this exact horror - Vanessa VanCleef - is now one of the perpetrators of this act. For so many years, Vanessa held a deep hate towards the people of Stormwind, and those who she saw as "heroes". Perhaps now she will be able to heal, and help Cecilia in the process.

This is the questline for the [race=1] Heritage armor.
For this questline you must have a human at level 50+ who is exalted with Stormwind.
The first quest popped up after login (but just in the quest tracker, no quest window) and wants us to meet [npc=198884] in Stormwind. If you didn't get the quest, try to find it at the Stormwind Embassy in the northwest.

1. 
   
2. An Urgent Matter - meet [npc=198884] behind the castle in Stormwind
3. 
   
4. An Unlikely Informant - meet him again in the basement of the inn in Goldshire, Elwynn Forest
5. 
   
6. A Window to the Past - talk to him (cinematic)
7. 
   
8. Rotten Old Memories - travel to Morgan's Vigil in the Burning Steppes and talk to [npc=9563]. Find 4 pieces of journals at /way 62.26 63.95 Cave entrance
9. 
   
10. Looking for Something Specific - return to Goldshire
11. 
    
12. The New Clessington Estate - travel to the west of Duskwood /way 10.03 55.43 entrance, upstairs and talk to [npc=199536]. Leave the building and talk to her
13. 
    
14. Misdeeds in Moonbrook - travel to Westfall
15. 
    
16. A Hungry Heritage - enter /way 42.52 71.58 and go to the marked area. Open your big map to make it easier
    Supply Only the Finest Goons- kill 16 enemies
17. 
    
18. Betrayal of the Brotherhood - escape from the underground (north). Use extra button [spell=397607] to make it faster
19. 
    
20. To Northshire - travel to Northshire (in the north of Goldshire)
21. 
    
22. Knock It Off! - kill and loot the 4 marked enemies
    What's Their Problem? - kill enemies to fill the bar
23. 
    
24. The Clessington Will - enter the Abbey and click the barrier. Click extra button Will to Survive, kill the enemies and defeat [npc=199006]
25. 
    
26. Will to Survive - pick up [item=204214] and give it to Master Mathias Shaw. Click extra button Will to Survive. Kill [npc=199008]
27. 
    
28. Go with Honor, Friend - return to Stormwind at the main entrance. Talk to [npc=198884] and go to [npc=65153]. Click extra button [spell=398747] while standing in the light
    - turn in, get your [spell=399752] and the title [title=760]
29. 
    

Questline took about 25 minutes with level 61, incl. cinematics and flights.

Lionguard red [outfit=460885]
Lionguard golden [outfit=460884]
Lionguard blue [outfit=460883]