This idea came to me during a discussion about SCP-182 and it's possible deletion. Depending on how a rewrite goes with that SCP, I might put together a sandbox article for this one.
The general idea is quite simple really. The memories, thoughts, emotions, and beliefs of anyone within a certain range of this individual transfer to the SCP. The range is small, say within 50 meters, and may take an undetermined length of time. Any exposure over XX minutes to the SCP starts causing severe mental degradation, beginning with memory loss, uncoordinated muscle movement, and ending with catatonia and eventually death. All information that an individuals mind possesses, even their brains ability on how to control bodily functions (like the heartbeat) slowly disappear. The entire process could take less than an hour.
The effect to the SCP itself is also alarming. The SCP will begin getting a flood of emotions and memories back from the victim. They are effectively adding this entire persons consciousness into their own, and the result is a disarrayed, fragmented shell of a person who really has no idea even who they are. They can no longer differentiate between the different conflicting memories and suffer from horribly painful migraines throughout the entire "absorbing" process. Their personality is always in flux and they suffer symptoms similar to a schizophrenic.
So, what do the SCP audience think of this idea?