Draw forth the infection from an enemy, consuming your Blood Plague and Frost Fever diseases on the target to activate two random fully-depleted runes as Death Runes.
An unholy pact grants you the ability to fight on through damage that would kill mere mortals. When you would sustain fatal damage, you instead are wrapped in a Shroud of Purgatory, absorbing incoming healing equal to the amount of damage prevented, lasting 3 sec.
If any healing absorption remains when Shroud of Purgatory expires, you die. Otherwise, you survive. This effect may only occur every 3 min.
30 sec cooldown
You passively move 10% faster, and movement-impairing effects may not reduce you below 70% of normal movement speed.
When activated, you gain 30% movement speed and may not be slowed below 100% of normal movement speed for 6 seconds.
2 min cooldown
Drain vitality from an undead minion, healing the Death Knight for 50% of her maximum health and causing the minion to suffer damage equal to 50% of its maximum health.
When you land a damaging Death Coil, Frost Strike, or Rune Strike, you have a 45% chance to activate a random fully-depleted rune.