[DUPLICATE] [Burning Steppes] I Am The Law and I Am The Lash

[dat311998]

Wowhead quest link: http://www.wowhead.com/quest=28278/i-am-the-law-and-i-am-the-lash
WoW Freakz quest link: https://www.wow-freakz.com/quest_helper.php?quest=28278&&name=i-am-the-law-and-i-am-the-lash
Bug description: The quest item can't be used, it will report "You can't use it yet" whenever i use it. I have tried to unmasked so that killing the mobs may have been successful, but it was not. I believed the quests is bugged for like already a year, because 1 year ago, i came to do the quest, and it was bugged. Please consider this, as it is the last quest for "Burning Steppes Quest" achievement, which is a part of the promised achievable Loremaster.
Proof: Sorry, i forgot to take a picture of it.

[Power]

https://forum.wow-freakz.com/Burning-Steppes-Quest-I-am-the-law-and-i-am-the-lash-t459136.html