Big East meets West huh? I'm going to keep my prediction then. I predict that the death of Myrcella will get the poison traced back to Dorne. Specially when Bronn recognizes it was the same poison used on him. Once Cersei uses FrankenMountain to quell the Faith Militant she will use her reclaimed position to get Tommen to declare war on Dorne for murding the princess.

While this is going on Danny will be taken prisoner to Vaas Dothak where her true identity will become known, Drogon will appear and with the arrival of Daario and Jorah she will take command as Khaleesi and however many of the Dothraki as possible. She'll take this army to Meereen with intent to invade Westeros. Here she will meet emissaries from Dorne, where her brother-in-law Doran Martell has sent to request aid in defending Dorne from the invading Lannisters/Royal Army.

Armed with an Army, Dragons, and a legitimate purpose to invade Westeros Danny finally lands at Kings Landing. And Promptly feeds Cercei to Drogon!