WoWDB

This NPC is killed as part of the daily quest Rumble in the Jungle which is the only way to earn reputation, apart from grinding mobs, with the The Saberstalkers.  This is one of the reputations needed at revered to unlock flying in Draenor via the achievement  Draenor Pathfinder. 

To do this daily quest, you will need to special summoning totems from Z'tenga the Walker, the same NPC who gives you the quest.  These totems cost various amounts of  Blackfang Claw which drop off of Blackfang NPCs around the area.

• For Akrrilo, you will need to buy one  Minor Blackfang Challenge Totem, for x 5  Blackfang Claws.
• For Rendarr, you will need to buy one  Major Blackfang Challenge Totem, for x 10  Blackfang Claws.
• For Eyepiercer, you will need to buy one  Prime Blackfang Challenge Totem, for x 25  Blackfang Claws.

All of these NPCs are summoned and fought in the Blackfang Challenge Area in Fang'rila in  Tanaan Jungle. They are shared tap, so you are welcome to group up or assist someone already fighting and save yourself from totem purchasing.