During his mortal life as the Warchief of the Orcish Horde of Draenor; Ner'zhul commanded a number of Orcish Warlocks and Shamans. Yet, when these wicked sorcerers were captured by Kil'jaeden and the Legion after the destruction of Draenor, they were transformed into twisted aberrations of their former selves. These Liches possessed tremendous magical powers, yet their immortal, undead bodies were bound to the iron will of Ner'zhul. Since the Liches showed unswerving loyalty to their master, Ner'zhul granted them control over the furious elements of the cold north. Now, Liches wield frost magic along with their own considerable necromantic spells

• Frost Armor
  
  Grants bonus armor and freezing damage shield to a friendly unit

• Death and Decay [Ultimate]
  
  A powerful spell that the Lich casts upon a large area of ground. A cloud of death and corruption slowly destroys all units and buildings in the area of effect.