Moist and Unpleasant

As if the dampness of this place wasn't enough to make my beard go into knots, now I sense something else upon the winds! There is a corruption that lingers in the air, a corruption which will make hammerin' runes into our equipment much harder. One of our scouts returned recently with information that may indicate what is causing this corruption. Phfew! I spit just thinking about it! Chaos umgi, |c, that is what we are likely dealing with! Worst of their kind. I'll take a greedy Marienburger or drunken Kislevite anyday over those dark souls from the frigid north. To make matters worse, it sounds like we're dealing with Slaaneshi scum! Phfew! I spit upon the thought of them!

Travel east of Olfrinson's Outpost into Deadwater and locate the Slaaneshi camp. Kill the cultists there and return to Thagroth Grumrune in Olfrinson's Outpost once the Slaaneshi cultists have been dealt with.