Aether

Aether is a double-edged longsword used by Vex.

Appearance
Aether is a black double-edged longsword that has a silver outline. It is identical to Susanoo due to a spell placed on both of the swords by Vex

Abilities
Once a person fuses all four swords of power they become Marethyu, who is more commonly known as Death. Once the person becomes Marethyu he gains the ability to use aetherkinesis which allows him to travel through the different time strings while wielding the sword.