Eydis Darkbane

Eydis Darkbane is one of two bosses in the fourth encounter in the Trial of the Crusader raid instance, released in Patch 3.2.

Trivia

 * Along with Fjola Lightbane, Eydis appears as a legendary card in the Grand Tournament expansion of Hearthstone. Eydis' flavor text reads: "HATES being called "the wonder twins"."
 * The card actually depicts Askalti Darksteel, a val'kyr from the TCG.