"Brother's War" is a fictional storyline in the Magic: The Gathering trading card game, focusing on the conflict between two brothers, Urza and Mishra. This war is set in the Dominaria plane and revolves around their rivalry over powerful artifacts and the use of technology in magic. The conflict escalates into a full-scale war, leading to significant consequences for the world and its inhabitants. The story explores themes of ambition, betrayal, and the impact of war, ultimately shaping the history of Dominaria and influencing future events in the Magic: The Gathering universe.