Was camping the fingered skelly for my monk quest and just killing off everything in stable areas. Not really trying to get Jester. Suddenly, while killing a skelly the Jester walked around the corner and towards me with a club in his hand. Wow, what awesome luck. Zone had a couple of newbies in the entrance area, otherwise I was only one in basement. Killed no Thickbones in time I was there. Plain and simple, he is a rare spawn. Don't think there is any one thing that will help him to trigger. Actually I am still sorta torked cause I still need a dang withered 5" finger. Good luck all.
Jarwa - 22 Monk
Ayonae Ro