The Twilight's Hammer are wielding foul magic here, <name>. They animate and energize the remains of Deathwing's blood, so that instead of drying out and disappearing it thrives and becomes more abundant.
Take out one of the bloodshapers, see if they have any clues as to where we can find this "forgemaster".
("One of them might lead us to the Forgemaster.")
Progress
We must make haste if we're to rebuild the World Pillar, <name>.
Completion
They're keeping slaves here? We ought to free them regardless, but perhaps they might also aid us in finding the forgemaster.