The Silver Vapor, also known as the Ashen Wraith or Smoke Sprite, is a localized, sentient phenomenon resembling a thick cloud of pale gray smoke. It thrives in environments such as crashed freighters or smoke-filled temples, drawn to heat and moisture. The entity possesses innumerable formless tentacle-like vapors that are translucent and resemble thick smoke. Its intensely hot, airy texture emits a metallic vapor with psychoactive properties, inducing euphoria in hosts.

Behaviorally, the Silver Vapor is passive, aiming to permeate and fill its host using their body heat to condense into a solid mass. It communicates through a low hissing sound, projecting disorienting sensations. The vapor can create a sensation akin to being submerged in deep water due to its density, and it employs vapor-lock and high-pressure jets for interaction, stimulating the host without physical contact.