1-The item that starts this questline is looted on Hard WorldBosses

Meet Ner'Zhul Spirit to finish the quesy.
2-He will ask you to bring 30 Gul'dan FelFire et antimater

3-you must retrieve The Secret Guide on C'Thun (15%)

4- collect 200 fragment on Agressive Titans (15%)

5- collect 200 Kirin'Tor Marks from Lucky Chests (25%)

6-collect 200 magic feathers from phoenix eggs (25%)

7- Argus Shadow Mark (12%)

8- Karth's Frost Mark (12%)

9- Orkas Fire Mark (12%)

Now you need to collect The 3 legendary Cloths :
10- 1st at Argent tournament Grounds (Icecrown)

11- 2nd at The Stormspire (Netherstorm)

12- 3rd arround a cave in Thousand Needles

Finally you can restore The Legendary Shirt

and get the shirt of your choice :

hint : You can have some difficult quest items at Bjorn
