|You can get this quest at the Crius Vindica Guild (on the Forsaken Coast) after returning the Crux of Fire to Korren, and then speaking with Erubor afterward.|
|The third floor of Lorewitch Tower, where you can complete Erubor's side quest|
Reaching Lorewitch Tower is a bit tricky: Strictly speaking, it is located in the Northwestern Kessian Basin, but you won't be able to reach it from the main landmass on that map, since the Tower is isolated on an island across a body of water. Instead, you'll have to either reach it from one of the maps north or west of the Kessian Basin:
|Casting Sparkling Wonder to make wolves flee the sole path leading to Lorewitch|
|Dense Nimbus or Invisibility will make it easier to enter the ground floor of Lorewitch Tower|
Lorewitch Tower, Ground Floor
When you enter the interior of the tower, you'll find yourself in a dim echoing chamber that appears to be empty of inhabitants at first, and won't have to face any adversaries for a period of time while you work on solving a puzzle involving levers that open multiple combinations of gates inside this floor. The levers in each chamber control multiple portcullis gates at once each time they're thrown, making this a bit more challenging than some puzzles.
When you've opened the gates to the outer wall in the lower west perimeter, you'll hear a strange sinister laugh as the gate slams shut behind you. You will now face a floating egregore-like being named Mortikus, who fires dangerous projectiles that can also poison you.
|Mortikus the Dimensional Eye egregore|
|The Lockmelt spell or pick lock skill can open the door leading to the second floor of Lorewitch|
On the second floor, you'll find a large darkened maze with a sinister red glow in the center. You'll find another Dimensional Eye named Vaxia near that central glow, but may still need to pass through it while winding through the passages to both the far northern and southern corners to throw two levers, which will open up the way to the stairwell leading to the much more congenial third floor.
|Vaxia, the guardian of the second floor maze of Lorewitch Tower|
|The Virescent Bell is found on this floor of Lorewitch|
Lorewitch Tower, Third Floor
The third floor of Lorewitch is a comparatively peaceful one, as long as you don't try to steal from the mages: There are no adversaries here, only preoccupied acolytes, and the archmage Charma, who Erubor sent you to meet for the "Assistance from Lorewitch" quest. You can find Charma in the central chamber, which is accessible from the far side of the third floor.
|Charma, the leader of the mage guild of Lorewitch|