Dalar Dawnweaver is a level 21 quest giver located at the Sepulcher in the Forsaken zone of Silverpine Forest. Dalar is a former archmage of the Kirin Tor, killed during the Scourge attack on Dalaran, raised as Scourge, and then freed by Sylvanas. It is only known that he was present when Kel'Thuzad was summoning Archimonde. It may indeed have been Arthas and his forces who killed him.
The subject of this section has been removed from World of Warcraft.