Ad Nauseam | Magic: The Gathering
Formats Ad Nauseam is Legal in
Official Oracle Text for Ad Nauseam
Official Rulings for Ad Nauseam
10/1/2008 : You may continue to reveal cards with Ad Nauseam even if your life total has been reduced to 0 or less. If you continue, you will continue to lose life, dropping your life total into negative numbers. As soon as you stop, you'll lose the game as a state-based action.