I haven't read the quests for Dragonwrath, Tarecgosa's Rest, so I don't know the origin story behind that weapon.
- Sulfuras was (And still is) Ragnaros' hammer.
- Thunderfury basically holds the essence of Thunderaan.
- Atiesh was a staff forged by/for _______ and possessed/used by the Guardian of Tirisfal.
- The Warglaives of Azzinoth belonged to a Doomguard Commander of the Burning Legion (Guess his name).
- Some say that Thori'Dal belonged to someone who fought in the War of the Ancients, or that it belongs to Alleria Windrunner. Also, Halduron Brightwing is a NPC who recently found it in his hand.
- Val'Anyr was a gift from the Titans to the first Earthern King so he could make some life.
- Shadowmourne was a weapon conceived in the mind of Darion Morgraine as a tool to use against The Lich King and Frostmourne.
Nearly all of these weapons have a story behind them, an origin that gives them context and status.
Now, Throw balance, class restriction & implementation out the window for a second.
Are there any other weapons in the Warcraft universe that have the potential to become legendary weapons, possessed by a select few?
Are there weapons that the Twilight Hammer have forged into beacons of death? What about the Naga, they have to have some kind of epic trident, right? Perhaps in the sands (lore) of Uldum there is an ancient blade, lost under the weight of history and time...
I suppose a better question would be is there any lore at all that comments om powerful weapons we haven't seen in-game.