I started toying with a JPS control deck besides of curses matter a few days ago and after some failing experiments I came up with this. It took me from diamond 2 to master with an 18:8 record. Your main plan is to annoy your opponent until he concedes or alternatively to beat him with
Channel the Tempest and
Ageworn Vestige. The optimal hand contains a combination of some removal, 1 or 2 markets and access to about 3 power (maybe also some card draw).
Elvish Swindler is probably my favorite card and I think that the small engine that he provides for this deck is great, but you could cut it if you like. But I advise you to keep
Adjudicator's Gavel and maybe also
Tome of Horrors if you decide to do this, because Gavel is necessary to beat some new kind of void focused cultist deck that many good players used and Tome is really helpful to outgrind other slow decks. Good luck and have fun!