English | Japanese “Release! Heaven's Feel!""Sing Out, O' White Grail!” —Caster Song of Grail: Sing Out, O' White Grail (白き聖杯よ、謳えソング・オブ・グレイル, Shiraki Seihai yo, UtaeSongu obu Gureiru?) is the Noble Phantasm of Irisviel. It is her love and motherhood bonded with the Holy Grail, allowing for the temporary granting of "her sincere and pure wish." Rather than being a function of her existence as a wish-granting device, it is instead her very nature sublimated into a Noble Phantasm.