Talk:Death Knight/@comment-112.198.118.76-20150515142141/@comment-180.247.117.13-20150614141238

No, the death knight Ainz summoned on cairne village is summoned using a corpse of a knight. When summoned this way they become permanent. The one he summoned in his room he used sword and have a time limit. Ainz also mentioned about this in the same chapter of the LN.