Hello there.
I am pleased to see that other people are trying out Jori as well. I was playing with it for a while now in practice rooms and I got to similar conclusions. Free or cheap spells are great, obviously. Proactive cards seem to be a lot better here then random counterspells. SCM is great, but enough is enough. I wanted to draw Jori relatively often, so I am playing three (probably too much, but it is blue, so whatever).
That being said, my decklist is a bit different. I am playing Jori in a Pyromacer Therapy shell.
4 Young Pyromacer
2 Snapcaster Mage
3 Jori En, Ruin Diver
1 Ancestral Recall
1 Time Walk
1 Brainstorm
1 Ponder
1 Treasure Cruise
1 Dig Through Time
4 Gitaxian Probe
2 Preordain
4 Gush
3 Lightning Bolt
3 Cabal Therapy
2 Dack Fayden
4 Mental Misstep
4 Force of Will
1 Mox Sapphire
1 Mox Ruby
1 Mox Jet
1 Mox Pearl
1 Mox Emerald
1 Black Lotus
13 lands:
1 Library of Alexandria
1 Strip Mine
1 Island
3 Volcanic Island
2 Underground Sea
5 blue fetches
Cabal Therapy is a great card with Pyro, and good with Jori too, for being cheap or free to cast. It also gives me maindeck access to more disruption than just 8 counters against fast combo like DPS, Belcher or Tezz, where this kind of deck usually struggles. I am playing all five moxen, which seems strange for a Pyromacer deck, but I thought that if nothing else, they cantrip with Jori, and they help a lot with casting both Jori and Dack on turn 2. Lots of turn one Pyromancers too. Dack is great in this deck, he pitches away additional moxen or lands from gush. I went down on lands due to full set of moxen. I am also playing both Strip and Library, becouse of pure greed. Forth Misstep is to protect guys from Bolt or Plow, but it is also useful against storm or opposing Missteps on your Therapies for example.
When this deck wins, it has like a milion cards in hand. Once you get Jori online she really pulls you ahead, slowly but surely. I found her excellent against slow blue decks, Mentor, other Pyros. In most fast combo matchups I cut her for hate. Same with shops. I don't know what to do against oath, becouse the matchup is so bad that I don't even care to have cages in a board (prefer crypts and leylines for both dredge and DPS).
