Bring the Imp in a Jar to the alchemy lab in the Scholomance. After the parchment is created, return the jar to Gorzeeki Wildeyes.
There is one more process required for Mor'zul's parchment; I need paper infused with Xorothian stardust. And... I'm afraid I can't do that here. I don't have the equipment!
There is an alchemy lab, however, with everything needed. It's in the Scholomance, on the isle of Caer Darrow in the Plaguelands.
I can't make the trip, but here - take this jar. There's an imp inside who is quite clever. Let him out at the alchemy lab and he'll infuse the parchment.
Have you been to the Scholomance, <name>? Has the imp yet infused the parchment with the stardust?
Ah, good. J'eevee created the parchment. How was the Scholomance? Charming, don't you think? And the bugs there... I hear they're delicious!
Well done, <name>, and thank you for returning my jar. I've had it for a long time... and it's not for sale!