Ascension Tech

A strange technology that goblins have been able to work with.
It's actually hard to explain it unless you're a goblin.
There's a perfect process for heating and treating metal to the point it becomes like glass, which works to project super hot light which takes any shape designed.
It's so common to the goblins that almost all of their combat ready units utilize ascended tech to a degree. The tech is even used to improve weapons.