THE DEATH KNIGHT
((info taken from :http://us.battle.net/wow/en/game/class/death-knight))
When the Lich King’s control of his death knights was broken, his former champions sought revenge for the horrors committed under his command. After their vengeance was won, the death knights found themselves without a cause and without a home. One by one they trickled into the land of the living in search of a new purpose.
Frost sharpens their strikes; blood fortifies their bodies; and undeath allows them to erupt in unholy rage in the heat of battle. A thousand atrocities are etched in the eyes of every death knight, and foes who gaze into them too long will feel the warmth pulled from their bodies, replaced with cold steel.
Death Knights engage their foes up-close, supplementing swings of their weapons with dark magic that renders enemies vulnerable or damages them with unholy power. They drag foes into one-on-one conflicts, compelling them to focus their attacks away from weaker companions. To prevent their enemies from fleeing their grasp, death knights must remain mindful of the power they call forth from runes, and pace their attacks appropriately.