An aegis is a type of dagger that has been seethed and tempered in angel blood.
Description[]
Aegis are described as looking like a common dagger. Aegis are rare, since angel blood is very hard to obtain, but there is a small number of aegis owned by Shadowhunters that are kept by the Iron Sisters. It is possible to request one in the armory but the requestor must have a very good reason as the Iron Sisters do not easily hand them out.[1]
History[]
In 2007, Sister Magdalena had an aegis in her possession and used it to stab Jace Herondale when he attacked her on Sebastian Morgenstern's orders after the Iron Sister made the Infernal Cup for them. Jace sustained an injury on his chest that severed the rune Lilith had created to link him to Sebastian. Jace was thankful for the separation from Sebastian's control but it proved to be temporary, as the bond reforged itself when the wound healed.[2]