Alexandros witnessed an orc warlock channeling magic into a mysterious orb during the the Silver Hand's attack on Blackrock Spire. When he tried to claim it for his people, Alexandros' hand was badly mangled. However, Kel'Thuzad heard of the blade and arranged a deal with Balnazzar to corrupt Mograine's oldest son into killing him. Alexandros was killed by the Scourge's ambush and the Ashbringer was corrupted. Kel'Thuzad raised Alexandros into a death knight serving the Scourge and led the Four Horsemen.