Thunderfury Was Forged From a Captured God
Long before it became one of vanilla WoW's signature legendary swords, Thunderfury's power came from Thunderaan, Prince of Air, who was defeated by Ragnaros and his lieutenants and had his essence sealed into a talisman split in two. Ages later a devoted follower fused the halves back together and, unable to fully free his master, poured what remained of him into a blade instead.
