Medium's SCP brainstorm

Class: Safe Due to Incident 554—17 SCP-XXXX is to be reclassified as soon as further research is conducted

Containment Procedures: Two armed guards are to be stationed outside of the entrance into SCP-XXXX, personnel affected are to be reported to on-site individuals clearance level 4 or higher, who should allow the affected person inside of SCP-XXXX, effectively canceling out the effects. At least four armed guards are to be stationed outside SCP-XXXX, no personnel without permission are to enter SCP-XXXX or to conduct testing on SCP-XXXX.

Description: SCP-XXXX refers to a currently unused 5x5x5 meters containment cell within Site-54, which features no observation decks or any entrances except for the main entrance located in the hallway of the site. The main entrance is only accessible via a clearance level 4 keycard which has to be inserted into a keycard holder beside the door. Further testing must be done on SCP-XXXX to determine it's nature.

All personnel aware of the existence of SCP-XXXX is convinced of an SCP contained inside of SCP-XXXX, further testing shows that simply touching the entrance of SCP-XXXX is enough for the personnel to be affected. Interviews show that affected personnel is not able to recall any information about the supposed SCP, but insists on its existence.

This effect can be countered by showing the affected individual the inside of SCP-XXXX, which has seemed to work effectively in combating the effect, allowing the affected individual to roam inside of SCP-XXXX seem to completely cancel out the effect.

Open Incident 554-17 report

Incident 254-1A occurred on January, 7th when former researcher James Ryder, who was recently transferred to Site-54, was affected by the effect of SCP-XXXX and went inside of SCP-XXXX in hope of clearing the effects. Dr. Ryder was a trusted senior member of the Foundation and was given the Site Director's keycard to clear the effects himself, however, after not existing SCP-XXXX for several minutes, stationed guards were sent inside to check on the doctor, but was met with a mutilated corpse of Dr. Ryder laying on the floor of the cell. No suspects had been found.

The corpse showed several signs of bite and scratch marks, measuring up to approximately one-third of a meter. The guards noted a post-it note on the entrance after the corpse was recovered, noting "I warned you, you didn't listen."

Addendum: After Incident 554-17, SCP-XXXX stopped exhibiting it's previous anomalous ability.