The Fourth Warrior, Task for the Ardent Cowl: Raem Stone

Juna will send you to find the Ardent Mages in the catacombs under Mistmoore. They can be found on the ledge near the Myr'Dal, south west from the Ascent in the middle. The Head Ardent Mage will tell you to repower the cowl, you must do a favor for each of her children and herself. This quest is from the head mage. She wants you to get the Cyst stone from the upper catacombs. This can be found in the chest beside the butler in his room. Get it and return to her.