If you are looking to add material compat to Enderswords, Imbued Gear adds two pretty unique ingots: Puresteel and Voidsteel. Both materials have a ToolMaterial
(radiant
and nihil
, respectively), so you could probably hook directly into that, or use it as a reference at least.
Puresteel and Voidsteel item registration
Puresteel tex
Voidsteel tex
Example of how to directly hook into my configurable ToolMaterials: IgConfig.INSTANCE.getMaterials().getTools().getNihil()
If you want to really above and beyond, we could talk about how to make them Modifiable
too, so they have the same on-hit passives as the Radiant Broadsword and Nihil Blade, and I'd be happy to help with recipe ideas too.