An Artifact From the Past

Objectives
Go to the Caverns of Time in Tanaris and gain access to the Battle of Mount Hyjal. Once inside, defeat Rage Winterchill and bring the Time-Phased Phylactery to Akama in Shadowmoon Valley.

Description
Illidan's attention is now on Kael'thas, thanks to you. The time has come to make our move.

I've had a vision of an artifact that will aid us in our final struggle - the phylactery of a lich known as Winterchill. Unfortunately its power was lost forever after his defeat in the Battle of Mount Hyjal.

There might be a way to retrieve this artifact, however. Legend speaks of a place in Azeroth guarded by bronze dragons... a place where past and present meet. It is there you will find what we seek.

Progress
Have you retrieved the phylactery yet, ?

Completion
My vision... it all becomes clear now. The powers this artifact has over a soul.... to contain it... to siphon it into itself... I will use those powers to reclaim what belongs to me! The time has arrived for us to take the fight to Illidan!