Rules Text Contains: Prevent all damage that would be dealt to you and planeswalkers you control this turn by sources you don't control. If damage from a creature source is prevented this way, Comeuppance deals that much damage to that creature. If damage from a noncreature source is prevented this way, Comeuppance deals that much damage to the source's controller.
![Comeuppance [C14 - 4]](http://gizmosgames.net/cdn/shop/files/94212.jpg?v=1747105875&width=1445)