The materials I gained from the general were pretty generous. Most of them are metals I haven't seen before, but after a quick run to the new part of the Lord of Lords pagoda's library, I was able to identify and know more about these new metals.
There were mainly three new metals that I haven't seen before.
First one was a massive boulder sized metal that occasionally sparkled and if one would listen carefully you could hear the sound of thunder itself coming from it.
Thundersteel. Something like this wasn't very rare, but that didn't mean it wasn't precious. Most Thundersteel is made when a thunderstorm lasts at least a hundred years. And within one of the far regions of the Beyond, the Thunder Domain which is apparently one of the three forbidden regions of the beyond, thunderstorms have started and lasted for almost as long as the beyond has existed.