its funny how confident you sound because that dosn't happen
nozdormu only appears, he dosn't fight, and your future self goes "look, nozdormu!" also, Chromie says nothing of Nozdormu fighting the infinite, it says she is uneasy at first then pretends to be overjoyed. Nozdormu is obviously hiding something.
Quest Obtatined at 75
Level 75 Dragonblight
Obtained at level 72 HordeAlliance
Chromie, at the top of Wyrmrest Temple, has asked you to travel to the Bronze Dragonshrine. Once inside, place the Hourglass of Eternity on the ground.
Protect the hourglass for as long as it lasts and then return to her with whatever information you gain.
Hourglass of Eternity protected
A time storm at the Bronze Dragonshrine to the northeast is keeping immortals from entering.
The Infinite Dragonflight are in a fight inside with the defenders to wrest control of the dragonshrine. We must take this opportunity to gain information.
You are not immortal. You can cross into the dragonshrine and use the Hourglass of Eternity. Protect the hourglass for long enough and the leader of the Infinite Dragonflight should be revealed.
Be warned, the Infinite Dragonflight will try to stop you!
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What news do you bring? What happened at the Bronze Dragonshrine?
Did you find out who the leader of the Infinite Dragonflight is?
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You saw Nozdormu? That doesn't make any sense.
<Chromie thinks a moment about what you've said.>
Actually, that's great news! We had no idea of where or when the Lord of Time had gone to. We just knew that he had disappeared to deal with very important matters.
So, even though the leader of the Infinite Dragonflight wasn't revealed, you've discovered that Nozdormu is alive and well, and fighting back against them!
Thank you, <name>. I'll be seeing you soon!
Quest Obtained at 80
Level 80 Dragonblight
Obtained at level 80 HordeAlliance
Chromie, at the top of Wyrmrest Temple, has asked you to travel once more to the Bronze Dragonshrine.
Once inside, place the Hourglass of Eternity on the ground and help your Past Self to protect it from the forces of the Infinite Dragonflight.
Hourglass of Eternity protected from the Infinite Dragonflight.
There you are! Or, were we just talking?
<Chromie muses over the temporal possibilities.>
Anyway, the Infinites are after you! Well, not you per-se. Rather, they're after the past version of you that defended the Hourglass of Eternity. You remember, right?
That was you back then, except it's you now too. Wait, that's not important. What is important is that you head back to the Bronze Dragonshrine and defend yourself and the hourglass from their attacks before you get erased from history!
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Oh my goodness, you made it! I was uncertain.
You flickered in and out of the time stream there for a moment during the fight! I thought for sure that we'd lost you!
But here you are safe and sound, with your past self rescued, on the other side of the time loop you were in.
You're quite the temporal heroine, <name>!
I am very confidient. 
