Tyberious, rightful heir

Vigilance. When Tyberious enters the battlefield, you become the monarch. As long as you are the monarch, creatures your opponents control enter the battlefield tapped. As long as you are the monarch, your opponents may only cast one non-creature spell each turn.{flavor} “House Tyberious was deposed and thought dead, but when their crown prince reclaimed his crown, thousands took his banner and marched beside him”