Necrotic Spark

Wondrous item, rare

A microscopic shard of dark matter that seems to consume the light around it, flickering like a dying candle flame in the negative space.

Properties

Infectious Touch: If the Spark comes into physical contact with a living creature, it embeds itself in their flesh. The creature must succeed on a DC 15 Constitution saving throw or be infected with the Sighing Sickness.

Sighing Sickness: An infected creature suffers 1 level of exhaustion immediately and another level every 24 hours. Their breath becomes a raspy sigh, and their veins turn black. The disease can be cured by a greater restoration spell or stronger magic, but if the creature dies while infected, their body crumbles to ash, leaving behind 1d4 new Necrotic Sparks.