After teasing a Saber focused event earlier in the week, smartphone game Fate/grand order has now announced hostiles commence in "Saber Wars" on January 20th. Series co-creator Nasu Kinoko writes the story for the event in which mysterious aliens appear in Chaldea Gate and interfere with the Grail War. Saber Lily will feature into the story, which sees the more feminine Saber trained by her fellow swords-people to master Caliburn.
By participating in this "Saber Wars ~Lily's Cosmic Warrior Training~" and collecting certain event items, it's possible to acquire 4★ (SR) Servant 「Artoria Pendragon (Lily)」.
Lily was previously offered as a pre-registration bonus.
January 20, 2016 (Wednesday) 16:00 to February 03, 2016 (Wednesday) 13:59
So far, the game's roster of Sabers includes...
Saber Lily - Artoria Pendragon, originally an alternate costume from Fate/unlimited codes designed Takashi Takeuchi with "emphasis on her girlishness" and inspired by the dress Caster placed on Saber after she was captured during Unlimited Blade Works. Nasu Kinoko and Gen Urobuchi joked about her being a version of Saber fully tamed by Caster during a discussion. She wields Caliburn rather than Excalibur.
Saber Alter - Artoria Pendragon from Fate/stay night's' Heaven's Feel route
Nero Claudius Caesar Augustus Germanicus - the playable Saber from Fate/Extra PSP RPG - voiced by Sakura Tange
Siegfried - Saber of Black from Fate/Apocrypha - voiced by Junichi Suwabe, illustrated by Ototsugu Konoe with original designs by KN for cancelled online game
Gaius Julius Caesar - a Fate/Grand Order original, voiced by Fate/Grand Order, illustrated by Shima Drill
Altera (aka Attila the Hun) a Fate/Grand Order orginal, appearing the Saber in pre-release promotion. Voiced by Mamiko Noto, designed by Huke
Gilles de Rais from Fate/Apocrypha (also the Caster in Fate/Zero)
Chevalier d'Eon - a Fate/Grand Order original, voiced by Chiwa Saito, illustrated by Daisuke Moriyama
Souji Okita aka Sakura Saber from Fate/KOHA-ACE. Voiced by Aoi Yuuki. Designed by Takashi Takeuchi (initially as a joke)
Fergus mac Róich, voiced by Takaya Kuroda, illustrated by B-suke
Saber, 5★ Mordred, previously Saber of "Red" in Fate/Apocryphavoiced by Miyuki Sawashiro (Houko Kuwashima in the old Deen F/sn), illustrated by Ototsugu Konoe.