Kingdom Death Obsidian Tower

I finished up my Obsidian Tower terrain piece. I only made the one (for when it's drawn as a random piece). I used cork board to make the raised mound around the pillar and broke it up to give crack. I wanted it to appear as though the pillar had broken through the ground. The pillar is black quartz from ebay so there's no paint. It's super shiny so looks super close to obsidian.