To repair the Iron Wall Longsword, I still need blood from a Blacknest Sandwind Warrior and a Burning Blood Warrior.
The Sturdy Metal Wire and Iron Wall Stone can only repair the appearance of the Iron Wall Longsword. Its spirit must be awakened through other methods.
Werewolf blood works best.
The Blacknest Werewolf Lair is to the west of the Observatory. Please bring me their blood, and I will fix the sword.