Magister Kalendris

Magister Kalendris is an elite night elf ghost mini-boss found in Dire Maul West.

Dungeon Journal
''When Prince Tortheldrin demanded the slaughter of the majority of his subjects, his most loyal lieutenants were tasked with executing his will. Magister Kalendris murdered many unsuspecting Shen'dralar without hesitation, but one of the doomed elves mortally wounded him during a destructive battle. Despite his demise, Kalendris's spirit still roams Dire Maul as a defender of Tortheldrin's rule.''

Quests
Estulan asks players to kill Magister Kalendris as part of The Cursed Remains.