Quel'Delar, the Sister Blade is a prismatic blade forged by the night elves and the five dragonflights along with its sibling, [Quel'Serrar]. Quel'Delar serves as an idol of opposition against the Scourge, and the elven factions of Dalaran would therefore like to see the blade play a pivotal role in the assault on Icecrown Citadel. Players are able to embark on a mission to assemble the sword and either wield it themselves or trade it with their respective Dalaran faction for a weapon they can use. Doing so will reward the achievement The Sword in the Skull.