Necromancy is the study of magic involving the dead.
The arcane mysteries are mysteries stated to be of life and death. Death, in the form of necromantic magic, acts as a counterbalance to life. It is an unavoidable force that breeds despair in mortal hearts and pushes everything toward a state of entropic decay and eventual oblivion. It is said that the sacrifice of life was the only way to ensure the saving of another. Sacrificial magic was considered the greatest violation of life and the energies of life, most commonly known as nature magic, are stated to promote growth and renewal in all things.
The Professions of the Cosmos
Drom'kor, Timewalker Necrolyte: "I could use the timeways to cheat death, but why bother when there are more elegant ways?"
Kena Shadowbrand: Warlocks have the ability to convert their own life force into rewards - both material and evanescent.
Zenith Shadowforce: "I have drunk the life energies of my bitterest enemy, and they were sweet beyond the telling."
In the face of demonic power, most heroes see death. Warlocks see only opportunity. Dominance is their aim and they have found a path to it in the dark arts, the arts of necromancy. According to the Blizzard Historian known as Justin Parker, warlocks aren't necromancers even though they have the abilities of necromancers. It seems that Justin Parker doesn't understand that warlocks can't have the abilities of necromancers without being necromancers themselves and that these voracious spellcasters summon minions to fight beside them.