Talk:Death Knight/@comment-117.0.15.144-20150831103205/@comment-33177490-20151007181023

Anon, that is because they were summoned by Enri through the Horn of the Goblin General. Though this is a guess for my theory, it's likely possible that the Death Knights can also learned it too. Anyways, Ainz was able to summoned a permanent DK thanks to the native corpses that is found in the New World. Unlike a normal summon, where Ain can just utilize a spell to summon a DK without having a native corpse as a medium around.