Today democracy is declining around the world, and so is faith in domestic institutions. Many strategies have been suggested to fight back against the tide of authoritarianism, but the idea of creating an International Constitutional Court has yet to catch fire among defenders of democracy. In this lecture—delivered as the Edward J. Bloustein Jurisprudence Lecture at Rutgers University on May 18, 2022—I explore the origins of the proposal for an International Constitutional Court, I discuss the structure and powers of this proposed tribunal, and I evaluate how to design an International Constitutional Court for success. I conclude that the Court, if ever it is created, should be limited to issuing only advisory rulings. To be sure, creating this International Constitutional Court is a Hail Mary Play. But it may be needed now more than ever.