Rune of DOOM

Rune of DOOM is a quest item received during the quest A Show of Force.

Trivia
The Rune of DOOM may be a reference to the classic computer game DOOM.

While the title may suggest a reference to the FPS game, Doom; The Icons logo appears to be a reference to the World of Warcraft MMORPG for the Insignia of the Horde, as NOTHING in the Doom series looks like the same Logo used in the Rune of DOOM.

World of Warcraft Horde: http://en.wikipedia.org/wiki/Horde_(Warcraft)

World of Warcraft Horde Logo: http://en.wikipedia.org/wiki/Image:Horde-logo-wow-warcraft.jpg