This is a fan concept of thunderclast from Brandon Sanderson’s novel Stormlight Archive. ⚡

In the novel a thunderclast is created directly out of the ground by a void spren inserting itself into the ground. It is characterized by arrowhead shape head, a skeletal body, and hate and menace. 😈

Since they're locally sourced and created, I thought it would be cool if their appearance correlate to the biomes they exist in.

This is how I imagine how a thunderclast might look crawling out of Sadeas’ prized forest, decimating both his workforce and his treasury with his very own expensive trees. Its name glyph says ‘thasas’, meaning forest. 🌲