The Maresfoot that tainted Brunil's draught is delivered daily by a man named Egind.
'The Maresfoot that goes into the healing draughts is gathered by a man named Egind, and delivered to me daily. I have never had any problems with him before now, but it seems he has shown his true colours at last, the treacherous knave!
'Egind will likely be somewhere near the front gate of the city, hoping to hand us another bushel of poisoned greens! Confront him with our discovery and see what he has to say for himself!'
Egind should be at the front gate of Imloth Melui with the day's delivery of Maresfoot.
Brunil has asked you to confront Egind with the knowledge of his treachery.
Brunil can be found in the Hall of the Gentle Hand, on the western side of Imloth Melui.
Egind has confessed that he did not mean to ruin the healing draughts. He substituted a similar-looking plant when he could not collect the proper Maresfoot that Brunil expected.