Crown of Empires | Magic: The Gathering
Formats Crown of Empires is Legal in
Official Oracle Text for Crown of Empires
Official Rulings for Crown of Empires
9/22/2011 : If any of the named cards stops being an artifact, it won't be considered by these abilities.
9/22/2011 : If you control artifacts named Scepter of Empires and Throne of Empires, the targeted creature won't be tapped. You'll just gain control of it.