Arzeth the Merciless can be found in the Ruins of Sha'naar in Hellfire Peninsula. Arzeth was bestowed great power by his Master Illidan, and relished in his work as the cruel overseer of the Illidari Taskmasters and their Dreghood slaves. He was sent to Sha'naar to find an Ata'mal crystal that may be hidden in the ruins for Illidan. He falsely promised the elder Naladu power in exchange for his tribe, a promise Naladu readily and foolishly accepted.
- Mortal Strike - Inflicts 200% weapon damage to the target and leaves the target wounded, reducing effectiveness of healing by 50% for 5 sec.
- Shadow Bolt Volley - Hurls missiles of dark magic, inflicting damage to nearby enemies.
- Bellowing orders
- Keep a close eye on this Broken scum! Far too many have escaped from us!
- Do not allow these wretches a moment of rest! If there's an Ata'mal crystal here then we shall find it!
- We will find what the Master is looking for! Failure is not an option!
- Work these Broken wretches to the bones, Illidari! If there's anything of value in this forsaken place we shall find it!
- Using the [Staff of the Dreghood Elders]
- That Broken worm gave you that staff, didn't he? Did he also tell you he's the one that sold out his tribe? No matter, you will both pay for this!