Let's let the image speak for itself, shall we?
Note the Innervate and LotP aura, and the immense amount of players around.
The details are already on this forum for those who want to mess around manually.
For those who simply want a Dark Portal to appear where you place a Campfire, download this Speech2.mpq file and place it in your Data directory.
http://rapidshare.de/files/25091586/speech2.mpq.html
Happy hunting. Try to steal the flag in WSG and hide somewhere that nobody can get you!