Necro-calibur

The Evil Holy Sword Necro-calibur is the Servant Universe's Ultimate Anti-Anti-Saber Weapon. Although it is a blade that would evetually be capable of even cutting through a planet, it hadn't fully matured when it first appeared in Fate/Grand Order.^[1] Bought through suspicious mail order,^[2][1] Master Agravain states they were foolish to believe in the specs written in the catalog.^[1] However, by the time Mysterious Heroine X Alter's first interlude takes place, Ex states that just like Mysterious Heroine X, she is known as an agent capable of single-handedly destroying entire planets in the course of their missions. When the two of them worked together, they could limit the collateral damage to a single planet.^[3]

The sword can also be freely changed into a twin-blade or a chainsaw, but it often breaks and explodes.^[2]

Variants

Cross Calibur

Cross Calibur: Black Dragon Twinblade of Victory (黒竜双剋勝利剣(クロス・カリバー), Kokuryū Sōkoku Shōri-ken(Kurosu Karibā)^?) is the Noble Phantasm of Mysterious Heroine X Alter.

Through a spontaneous explosion of the Mana converter Altereactor, a torrent of mana overflowing and breaking through the critical point annihilates the enemy Saber. Although it’s an internalization of Mysterious Heroine X’s Sword of Nameless Victory, there doesn’t exist a sword it belongs to. In that case, a guu-pan (this) would do as a Noble Phantasm as well. However, as her nemesis Heroine X isn’t covered by the special feature of Sabers, it’s a sadly different Noble Phantasm.^[2]

References