I thought of making my own version of
Ali ibn Abi Talib as a Saber. I know He has been done before on this site, but I wanted my own shot.
Ali was the Prophet Muhammad's young cousin, son-in-law, sworn brother, and right-hand man. Known as the Lion of Allah and bearer of the holy sword
Zulfiqar, he was born inside the Kabbah, was the first male to convert to Islam at 5 years old, and had the strength of 40 men. He was also an erudite scholar, personal secretary of the Prophet, the eventual Fourth Calif of Islam, and writer of the
Nahj al-Balagha, making him more or less the father of Muslim theology, on top of it containing all of his knowledge on many other academic subjects, so he could also qualify as Caster.
As a Saber, I want to emphasize his nature as the blessed warrior that he was in his youth. Starting with Skills, Protection of the Faith is a given. I imagine him possessing Divinity to represent him being born inside the Kabbah. The most interesting one I came up with is one called "Lion of Allah"; as he was born inside the Kabbah and was the first male to be converted by Muhammad, he is exceptional in the eyes of the Muslims and known for his unshakeable character. Thus, even if he was already formidable as a living human, he becomes even more powerful as a Servant thanks to this Skill born of the Muslim's reverence of him. However, it works both ways: his power only lasts as long as he remains true to this reverence; should he be made to break the tenants of Islam, his power will be severely reduced.
As for Zulfiqar, it is a Divine Sword of the stars of the same caliber as Excalibur or Galatine. I would steal the idea that it is a sword both of the Earth and the Heavens. My idea would be to make it "mark" the opponent with a first attack; then a giant phantom sword comes down from above to crush them.