The Queen's Glass Game

is an Anti-World Noble Phantasm used by Nursery Rhyme. She assumes the form of her Master's desires, and it can be called the ultimate manifestation of Alice's dream. It winds back the battle to the first turn upon its activation, meaning that the girls’ game will continue on forever if they are not defeated by a set turn.
This ability can be activated under preset conditions. For example, if Caster's monster is defeated, Saber, Hakuno and Rin would find themselves back at the moment where they entered the Third Floor for the first time.Fate/EXTRA Last Encore - Episode 06: Perpetual Engine - Maiden Empire
==References==
Category:Noble Phantasms
Category:Anti-World Noble Phantasms
Category:C rank Noble Phantasms
Category:Anti-Self Noble Phantasms‎
Category:Noble Phantasms introduced in Fate/EXTRA
Category:Anti-Unit Noble Phantasms