Obsidian

Why it's popular on DonutSMP

Obsidian is popular on DonutSMP because crystal PvP is one of the server's defining metas, and obsidian is the block that makes fast crystal placements possible almost anywhere. The wiki describes DonutSMP as revolving around crystal PvP, and recent Reddit threads still complain that crystals and anchors dominate fights, which says a lot about how often players burn through support materials. Obsidian also has steady utility outside duels: bunker walls, vaults, portal builds, and trap layouts all consume it in bulk. Since players can often get essential combat supplies from built-in systems instead of relying entirely on auction listings, auction demand for obsidian usually comes from convenience, bulk volume, or better pricing.