Now that I have the spiders' venom, I'd like some live specimens to study. Unfortunately, capturing a living, giant spider is more than I can ask of you, young <class>. And a giant spider is more than I could handle myself!
But if you can find an unhatched egg, then delivering specimens will be much easier, and I can then arrange for the unhatched spiders to be contained.
There must be a nest deep in the Shadowthread Cave. Please, search for an egg in the nest and return it to me.
Progress
Have you been inside the Shadowthread Cave, <name>? Did you find a spider egg?
Completion
Ah, very good. I will have this egg and the venom transported to Darnassus, then return there when my studies are done here. I expect to find out a great deal from these specimens, <name>. You have been a great help to me.
in northwestern Shadowglen and go inside. Take the middle path at the first split. Continue straight again and then follow the path up and around to the right. You should find eggs here. You will most likely have to defeat Githyiss the Vile to access the eggs.