Saber risks disappearing, since she is without a Master to anchor her to the world, but defends Shirō from Archer, stating that she swore an oath to protect him and that it remains unchanged. However, she is overwhelmed by Archer, forcing Shirō to intervene and take over in the fight. Rin takes advantage of Archer’s distraction to form a Master-Servant pact with Saber, which she accepts, therefore making her Rin’s new Servant. Fully restored, she subdues Archer, who mocks her for her wish of rectifying her legacy. He then casts Reality Marble, a spell that creates an alternate reality. Shirō, Rin, and Saber are subsequently transported to Unlimited Blade Works, Archer’s Noble Phantasm, which is an alternate reality consisting of a barren wasteland filled with swords and floating gears. Archer creates several swords and fires them at her, but Shirō summons a sword of his own and destroys them, dissipating Unlimited Blade Works as a result.