Fluxsteel Sword
The flux of the land runs through the blade: it strikes quicker in a chunk full of flux, slower in a dried-out one.
kinditemcreative tabFluxion
Currents
Alloy7
Ember3
Lattice3
Weave1What the Loupe reads: 14 in all. The game works them out from its recipes. Wheel of Currents
In the Codex
Entry 
Fluxsteel Gear — Tools and armor of a steel the flux of the land runs through.
Where to get
Caches
Vaults of the Flooded Archive and Great Dam