The Warforged don’t have outstanding subclasses, so it’s somewhat challenging to begin with something that totally matches what a Fighter needs.

Bolter Combi-Grenade Launcher. Not really a worthwhile update above a normal boltgun, because this only comes with frag grena

I don’t Imagine Fighter presents very much in this article. The class is mostly fairly poor, and just a good concept if there are a number of particular feats you have in mind that You can not get some other way.

Musical instruments are tools, so though Artificers are likely