Campaign 19 | Obtaining Combinate 1
Collect Mark of Illidari
You need 50 of them to complete the quest.
They drop almost everywhere – Black Temple, KAEL, VOID or Sunwell 
You can also go past Lady at the port ledge.
100% drop from Sunblade Dragonhawk slain (25)
Bring them back to Zero.
Campaign 20 | Obtaining Combinate 2
The second quest is to collect Primal Nether.
You need 10 of them.
Campaign 21 | Obtaining Combinate 3
The next stop on your way to the coveted weapon is through professions.
Craft one piece for personal use.
The other option is to visit Ragnaros.
Campaign 22 | Obtaining Combinate 4
Face off against the Void, that’s your next task.
Don’t forget to use the item I placed in your bag.
Crystalcore Sentinel slain (7)
Campaign 23 | Obtaining Combinate 5
This will be a tough nut, don’t forget to heal.
Bring his slain proof.
Campaign 24 | Obtaining Combinate 6
Visit Coilfang: Serpentshrine Cavern and face the Blind.
You need his slain proof.
Greyheart Nether-Mage 3x slain
Campaign 25 | Obtaining Combinate 7
You will find them at the very end of Hyjal (Don’t be afraid to go further and push your limits!)
Campaign 26 | Obtaining Combinate 8
Bring his slain proof – this will be a tough task!
Campaign 27 | Obtaining Combinate 9
Your last stop will be Hydross.
He is the first boss in Coilfang: Serpentshrine Cavern.
Bring his slain proof and kill 3x Tainted Water Elemental.
Return to Zero and the reward is yours.
You will receive 7x Event Marks for completing this quest line.