Two spells were presented at BlizzCon 2007. The first spell for the Death Knight is Army of the Dead. This spell raises allies from the dead to come to the aid of the Death Knight. The other spell was Unholy Embrace (Instant Cast, 5 minute cooldown). This spell embraces the target in a silhouette of darkness for 6 seconds, corrupting any healing spells and effects cast upon or currently affecting the target to cause damage for 50% of their healing potential instead of restoring health. Any damage shields cast upon or currently affecting the target will also be instantly consumed, dealing 50% of their absorption potential in damage. Once afflicted with Unholy Embrace, the target cannot be afflicted with Unholy Embrace again for 1 minute. I hope that this might make your minds think about what theese spells will fit under in talent catagorys.