Finally managed to secure a copy of Jin Sakai once it became available at my LGS. Given this deck a few runs and it's been quite effective. Jin generates a lot of value for pretty minimal effort, leaving a lot of slots for control pieces (and even a few pet cards, like Mana Maze).
Overall power level I'd say it's a high 3, can probably play decently in a 4 bracket. Doesn't win very quickly, but it draws a lot of cards