Damping Engine | Magic: The Gathering
Formats Damping Engine is Legal in
Official Oracle Text for Damping Engine
Official Rulings for Damping Engine
8/1/2008 : A player can only sacrifice a permanent to end this effect if he or she has more permanents than any other player, and he or she hasn't already sacrificed a permanent to end the effect this turn. The ability to sacrifice a creature is granted by the same effect that is being ended.