This is a build for personal use, that follows the following rules:

1. Don't use Umbra or Aura Formas.
2. Don't use Hard-To-Get Arcanes (Eidolon, Arbitration, etc.).
3. Don't use Helminth.
4. Don't use mods I dislike like [Combat Discipline].
5. Don't use unmaxed mods.
6. Build doesn't consider Archon Shards, I don't use any.
7. Build doesn't consider Operator School, I always use Zenurik, however.

Simple [Excalibur Umbra] build for general use and Steel Path on the side. Cast 2 to blind enemies and not die. Cast 4 and spam E to kill everything.

It's not the best build ever, but gets the job done.