Mystery Counter?

[Entei Slider]

I have this ghost thing on the GPX+ saying
"MYSTERY COUNTER HAS REACHED CRITICAL MASS! What happens next?

It is a mystery~."

Explinations?

 

[Rockman!]

Not trying to minimod or whatever but you should really leave GPX related stuff in here.
http://forums.the-bell-tree.com?topic=7190462/1865/