This is the staff from the hunter epic quest started from the petrified leaf.

For too long has lok'delars model has been a stick with a green glowing end its intended model exsists in the game but it was never implemented! It has even been implemented in druid class quests after cata but Lok'delar has still yet to be fixed. If your a hunter who attained these legendary weapons help bring the model it truly deserves to light and get it fixed!

http://us.battle.net/wow/en/forum/topic/1195720005

Even though the quests to attain it are gone this should be fixed.