Into the Darkway
Into the Darkway is a quest for level 90. It is step 13 of 14 in the Gathering of the Elves storyline. The quest's turn-in marker is in Silvermoon City at 40.4, 34.8. It rewards 13,700 experience and money.
Description
Ulen's imposter may have escaped, but I suspect I know what the cult has been doing.
The Twilight's Blade must be redirecting Suramar's mana flow. Without it being sent to the correct places, our awareness dulls, our golems wilt, and our entire society risks a mana withdrawal.
There is only one place they would be able to exert control over our ley lines like this, and that would be the Arcway.
Go. Find them and crush them.
We will meet in Silvermoon when you are done.

