First things first: We're going to need ammunition. Ammunition powerful enough to pierce the armored hide of a black drake.
West of Thundermar is a Wildhammer town that's been overrun with unbound fire elementals. Any weapons left behind in that conflagration will have been tempered in elemental flame. Tougher than anything I could whip up at this forge!
Find me spears in the Humboldt Conflagration, <name>. The pointier the better.