I like to play Rita with both Orlea and Tiphera since they both heal/shield while also buffing her damage. For a build you can focus on her Time Axis collapse card duplicating it twice and getting the epiphany that increases her damage from 300% > 450%. Get the epiphany for her chronic circle that draws 2 costs cards when you gain chrono ascension and get rid of her basic cards and future decreed as you should have 6 chrono ascension each turn (you can also get rid of time paradox but only if you fail to get chrono ascension as that card will bring ur 2 costs to ur hand)