The Carnage Engine

A brutal, heavy-bladed longsword forged from dark, matte-black iron. Its edges are microscopic serrations that never dull, and the fuller is filled with a constantly flowing, viscous substance that glows like molten brass. The hilt is wrapped in the hide of a red dragon, and the pommel is a jagged shard of obsidian that pulse in rhythm with the wielder's heartbeat.