The Hand of Darkness

Now, I'm not one to ever give up a fight with the greenskins, but those dead manlings are giving us more trouble than all the bloody orcs and blasted goblins in this whole chuffin' swamp! Word is they're bein' roused by an ancient evil deep in the swamp, one whose dark presence is stretchin' forth it's hand over the Marshes. Droki Redbeard's never been afraid t' fight anything, an' he's tracked the ancient evil back to a looming tower with no right t' be there. If he's intendin' t' rout out the monster responsible for all the chuffin' dead things in this swamp, then I'm goin' t' give 'em all the help that can be spared.

Travel east to Oathhold in Beardrot. Speak to Droki Redbeard when you arrive.