An attempt

Item#: Scp-4984

Object Class: Keter

Special Containment Procedures: Containment is impossible and efforts are instead to be made to disguise the SCP as a disorder known as "fatal familial insomnia"

Description: SCP-4984 is an anomalous disorder that runs in families and slowly kills the affected individuals by killing them in their "dreams" every night although these dreams do not function as normal dreams do e.g no eye movement, impossible to remember etc