Behold my brilliant artwork!

What you want is one of the two mobs in the back. One of these mobs is a Blackrock Pyromancer. He is what you will want to kill, so sap the other guy and go up the little hill behind you. Ranged pull the pyromancer. Just before he gets in range hit evasion and kill him as quickly as possible. He will flee just before he dies, so crippling poison is your friend. You could use kidney shot just before he gets to 20% life but why waste it on a fleeing mob?

As soon as you kill him, wow gold loot him and vanish.