Locus Blade, Infrasonic
The Locus blade forms a cutting beam of coherent energy. Like a Locus beam, the blade’s modulation can be reversed to provide healing. These blades produce a pleasing, low hum that grows louder and shriller the faster the wielder swings the weapon.
Source
The Liberation of Locus-1 pg. 59
Dragonscript
ID
a486413e4420ebf028a83360