Kill 7 Helboar in the Blasted Lands and return to the Fallen Hero of the Horde.
<The Hero looks you over.>
You are a [class], no doubt. I would ask an honorable task of you, but I must test your strength.
It is said that Rexxar would measure the sharpness of his blades by killing a helboar with a single, swift strike. Now I will measure your strength by killing them.