Photon Saber

The Photon Saber is a melee weapon in Xenoblade Chronicles X, used by the Blast Fencer, and the Galactic Knight classes, with Rank 10 of the latter class granting mastery and allowing any class to use it. Additionally, the characters Doug and Yelv use this weapon.

Overview
Photon Saber attacks are well known for melee combos, which are Arts performed right after other Arts that used the melee weapon. Starfall Rondo and Starlight Duster are especially powerful with high melee attack and potential, respectively. Additionally,

In addition, Essence Exchange is a very quick way to gain before battle starts, and is recommended for players that want to start each fight with Overdrive.

In terms of survivability, Astral Heal is often useful for recovering health, and Astrolibrium works well as a reflect aura that pairs well with Galactic Cataclysm in beam builds.