March of the Lich King

The Lich King returns to Hearthstone, leading his Undead army and the new Death Knight class in an all-out assault on the elven city of Silvermoon!

The Blood Elves won’t go down easily; they are as thirsty for combat as they are for the magic of the Sunwell that they draw power from. As the Corpses pile up, the Death Knights’ army swells, and so begins the March of the Lich King. More info here.