The Black Tower

A smooth, seamless obsidian spire that jutted from the earth like a blade near a Fray-warped settlement. It caught no light, cast no shadow, and repelled the Fray around it—creating an island of stability that Sera exploited for power. Inside was infinite void with ancient glyphs, and at its heart, a miniature replica feeding on the world's roots. Destroyed when Rook pulled the replica free.