Makes better sense here
* This angelic weapon is referred to as the "Sword of Lucifer" in [http://www.acedmagazine.com/index2.php?option=com_content&task=view&id=3107&pop=1&page=0&Itemid=54 the official episode summary] released by The CW, although it is never referred to as this in canon.
* Angel blades, while rarer in the earlier seasons, gain more prevalence in the later seasons, particularly after the revelation that they can kill demons as well as angels
. The discovery that [[Asa Fox]] had one caused the Winchesters to comment that he was a serious [[hunter]]. In later seasons, angel blades have mainly taken the place of [[Demon-Killing Knife|Ruby's knife]] as the Winchesters' main demon-killing weapon.
* In season 13, angel blades are the only weapons used by the Winchesters to kill demons. Ruby's knife is only used again by either of the Winchesters against demons in [[14.01 Stranger in a Strange Land]].
* While initially only a weapon used by angels and the Winchesters, angel blades have become to be used by other characters in later seasons, including demons and other hunters such as [[Asa Fox]] and [[Eileen Leahy]]. The Winchesters
commented that Asa having an angel blade was a sign of him being a major hunter.