Seek the Twilight Encampment north of Nordrassil and use Tholo's Horn.
Provided Item:
Description
We've identified the general direction where the infiltrators have been coming from, thanks to your work.
Now we just need to shut down their camp and put an end to their operations this side of Nordrassil.
Take this horn. It will signal one of our emerald drakes to swoop down and give these Twilight cultists a taste of the flames they so madly worship.
Reward
You can choose one of these awards:
Also, you get:
7 80
Progress
Is it done yet, <name>?
Completion
Excellent, <name>. That should put a stop to the attacks once we finish these elementals off.
Gains
Upon completion of this quest you will gain:
Additional Information