I actually blisted new person once that joined to farm party. Was long time ago and I took person off blist few days after, but I never saw him again...
Not impossible, you go to Party Finder > click trials > select Thordan Extreme > select what kinda players you want to comment section "Training from the start, newbs welcome!" or something else and lastly patiently wait pt to fill up. (I did this just few nights ago, had fun even if it was short time).
