ĭuring the Second War, the original death knights created by Gul'dan were not battle-hardened warriors unlike modern death knights of the Scourge, they were insidious necromancers who possessed a superior intellect and tremendous magical power. As necromantic magic is considered to be a dark and corruptive energy, its use was made illegal in the Seven Kingdoms. Researching into banned fields of magic such as necromancy is expressly forbidden by laws almost as old as the Kirin Tor itself, and those who persist are censored, stripped of their power and influence, and banned from the kingdom. For the mages, necromantic magic is highly illegal, should be avoided at all costs, and they only discussed to have a basic understanding of its use. In the Magocracy of Dalaran, any practitioner of necromancy is the enemy of the Kirin Tor. In the Maw, the Mawsworn army employed Maw necromancers, as Zovaal the Jailer knew that there is great power in the dark art of necromancy. Among their ranks, the house employs many Maldraxxi necromancers to insert Maldraxxian souls in the bodies they created, or alternatively, to separate body and soul from already existing constructions. Among the five houses that rule Maldraxxus, the purpose of the House of Constructs is the creation of necrotic constructs to populate Maldraxxus's armies.

Under the rule of the Primus, creator of the arts of necromancy, Maldraxxus is home to the Maldraxxi necromancers, who are in charge of creating the bodies and preparing the souls of the undead that will defend the Shadowlands from external forces and wage war on the enemies of Death.

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