rating: 0+x

Item #: SCP-XXXX

Object Class: Euclid

Special Containment Procedures: SCP-XXXX is to be kept within an 4m x 4m x 4m case of toughened glass air chamber-grade bulletproof glass. Under no circumstances are any personnel permitted to enter, open, or conduct testing within the case that SCP-XXXX is contained within without authorization from a Level 3 personnel. Any and all testing done on SCP-XXXX must only be a D-Class unless the creature is authorized by Level 3 personnel. No personnel are allowed within 2 meters of SCP-XXXX. Any human subjects exposed to SCP-XXXX must undergo psychological counseling once SCP-XXXX is expelled from their system if the expulsion process does not result in death.

Any subjects under the influence of SCP-XXXX (known as SCP-XXXX-1) must remain within a containment area fit for the species of SCP-XXXX-1 and must be devoid of anything that may possibly harm it, including, but not excluded to: knives, metal cutlery, wire coat hangers, and electrical wires. SCP-XXXX-1 must be interviewed in one week intervals for an evaluation on mental health. Any personnel in charge of watching SCP-XXXX-1 must have basic medical training and a psychological evaluation before being posted to that position.

Description: SCP-XXXX is a cloud of black smoke with no discernable source. When outside of a host, SCP-XXXX will act like normal smoke, with no discernable form or volume. It often appears to be coming from a large fire and rising into the air up to approximately 12 meters.

When a potential host1 begins to come closer, SCP-XXXX will make itself appear to be even larger and darker than before. Previous hosts of SCP-XXXX have reported hearing screams and calls for help from loved ones or children, suggesting that SCP-XXXX uses cognitive abilities to lure new hosts.

Once SCP-XXXX takes a host (SCP-XXXX-1), SCP-XXXX-1 will not show major symptoms until a week after SCP-XXXX began inhabiting it. After the one-week period, SCP-XXXX-1 begins having a variety of physical symptoms including but not limited to: exhaling what appears to be black smoke, loss of appetite, and, most notably, a change in eye color to a dark grey.

After the one-week period, SCP-XXXX-1, alongside the physical symptoms, will also exhibit a severe change in behavior. SCP-XXXX-1 begins to resent the presence of other members of its species and makes many attempts to isolate itself from them by any means. SCP-XXXX-1 will also report a severe drop in mood, intensified thinking patterns, and visual and auditory hallucinations2.

All symptoms caused by SCP-XXXX continue to worsen the longer SCP-XXXX-1 is hosting SCP-XXXX, until the psychological strain causes SCP-XXXX-1 to snap, causing them to attempt to expel SCP-XXXX via self-inflicted injuries resulting in a near-death experience. Once the host is close to death, SCP-XXXX will evacuate from the body in search of a new host.

The previous host, if they survived the expulsion process, will commonly have eye damage, resulting in a much lighter eye color, as well as many leftover mental health issues from the time spent as SCP-XXXX-1 as seen in the case of Agent ████████ after extraction and Dr. ███ after Security Incident-22-B-XXXX.

Addendum: SCP-XXXX's containment chamber is to be made of air chamber glass, as opposed to toughened glass.

Addendum 2: Researcher Dr. ███ has requested that all testing done on SCP-XXXX be suspended until further notice after Security Incident-22-B-XXXX.