Unlimited Blade Works


 * This page is about a Reality Marble. For one of the scenarios in Fate/stay night, see Unlimited Blade Works (route). For the movie see Unlimited Blade Works (movie).

Unlimited Blade Works is the Reality Marble of Emiya Shirou and is treated as the Noble Phantasm of the Heroic Spirit EMIYA. Still, the world of Emiya Shirou and EMIYA are different.

Once invoked, a circle of fire will expand itself starting from the caster’s location and transform the surrounding space as it passes. The inner environment of the bounded field is characterized by a desolate, reddish brown wasteland with immense interconnected gears suspended in midair. Twilight from beyond the horizon provides the area with light, although in EMIYA’s case that is somewhat opaqued by smoke and embers coming from the ground itself. The landscape is dotted with countless weapons, most of which are swords.

Details
The Reality Marble main purpose is to record and to make possible the replication of all weapons that Emiya Shirou has ever seen. It provides with all materials necessary for the manufacture of weapons, thus facilitating the reproduction process. Defensive armaments can also be reproduced, but the prana cost will be two to three times higher.

Deployment of the bounded field will automatically reproduce all armaments recorded inside of the Reality Marble. However, these weapons will keep consuming an amount of prana, which is added to the energy requirements to maintain the bounded field. The cost is also high to reproduce weapons that did not exist when the bounded field was first expanded, or to recreate those that existed but were destroyed.

That aside, it is also possible to reproduce weapons without actually deploying the Reality Marble by making use of Projection Magecraft. Still, reproduced weapons will lose one rank compared to the originals.

While merely a hindrance against a normal Servant – who possess only one weapon but have mastered it to the utmost limits – this is the greatest counter against Gilgamesh, who overwhelms other Heroic Spirits by having an infinite supply of Noble Phantasms, thus making Emiya Shirou his natural enemy.

Incantation
See Chants & Incantations for more details

Since Reality Marble is an extremely high-level Magecraft, both Shirou and Archer use an incantation to facilitate the invocation of Unlimited Blade Works. The chants of the two, while similar, differ slightly due to the different experiences in their respective lives. Still, both versions are regarded as being close to a Ten-Count aria used to activate High-Thaumaturgy.