The 'Frost-Bitten Needle' is a tarnished silver housing holding a jagged, black-glass shard that functions as a sentient compass. It detects necrotic rifts by vibrating with the intensity of a freezing shiver, forcing the user to make a Constitution save if held too long. The compass speaks in a crisp, grating voice, constantly griping about the 'abysmal temperature' and criticizing the rogue’s choice of path. When a necrotic rift is within 100 feet, the needle turns obsidian-black and the compass sighs, 'Another death-trap, and here I thought we were aiming for a warm tavern.' It is indispensable for avoiding buried ancient graves in the tundra but is notoriously difficult to talk into providing useful directions.