I found this on YouTube its very good it works for me
It works at>Devil Eyes - Didnt checked yet
It works at>Penons - Party will be lv 60 +
It works at>Ninja Mages - Party will be lv 85+
It works at>Karras - Party will be lv 73+
If u just try to invite every goldbot that u see it will finally work >....>
but you have to try it on the days Tuesday,Wednesday,Thursday or Friday because otherwise they all will be in another party.Ill post some screens with proof later :P
WARNING: Dont Forget To Disable Item Share Otherwise They Dont Accept