Time magic was the province of our former leader, Grand Magistrix Elisande. Much of her knowledge died with her.
It is said Elisande had mastered incantations known only to the bronze dragons. Perhaps they would be willing to aid your cause.
The echoes of magic here reverberate through the timeways.
It was here that Gul'dan once traveled between worlds with the aid of the Vision of Time.
Though this is merely an echo of this enemy of Azeroth, know that death at this entity's hands would prove quite real.
Gul'dan will not be missed... not in this, nor any other timeline.
Garrosh Hellscream... Such a pity how things turned out.
In countless potential timelines, he was seen as a great hero to his people. Some called him the Horde's greatest warchief.
What you saw here was one of his worst possible incarnations. A waste.
Even as a reverberation of the past, Garrosh was a formidable foe.
I sense the threads of fate upon you. You are indeed worthy of what is to come next.
Had there been any doubt, I would never have allowed the shard to fall into the wrong hands. Not again.
Go. Return to Oculeth. With the shard restored, he can now send you to the place you seek.