Kill 12 Fen Creepers, then return to Rethiel the Greenwarden in the Wetlands.
I do not know why, but a festering grows within the Wetlands. Fen Creepers have risen. They are diseased, fevered blisters on the land, and for the fever to break they must be dispatched and allowed to settle back into the marshes.
The Fen Creepers shamble amidst the waterways of the Wetlands.
The Wetlands still weep, and the Fen Creepers still rage. Return to me when your task is done.
This land is soothed by your efforts, and for this I will grant you a boon.
You will be able to choose one of these rewards: