Does my wife become permissible for me after I told her: "If you do this, then you are divorced," and she did it, and I took her back after two divorces in the same sitting?

Frequent utterance of divorce and the use of swearing by it is a mockery of Allah's rulings, and it is among the oaths of the dissolute. A conditional divorce, according to the majority of scholars, takes effect when the condition occurs. However, according to Ibn Taymiyyah, it does not take effect unless there is an intention for divorce. Your statement "You are divorced" (أصبحتِ طالقاً): if you intended it as a statement of information, then it does not take effect; but if you intended it to initiate a new divorce, then it does effect. Divorce after a dispute is effective unless it completes the triple divorce. If the wife has been divorced three times, she becomes unlawful for you until she marries another husband, unless some of the divorces occurred while she was in a state of separation from you, in which case they are not counted. Ibn Taymiyyah holds that divorce does not occur during menstruation or postpartum bleeding, or if multiple divorces occur during one period of purity, or if it occurs during a period of purity in which intercourse took place. It is necessary to refer to the Sharia court or people of knowledge due to the complexity of the issue.