The Cathar
Identity — Guardian (U)
Undercover (Unveil only if another identity has been unveiled or if another player attacked the Leader this game.)
Unveil—{5}, Pay 5 life. (Start the game with this identity face down in the command zone. Turn it face up any time for its unveil cost.)
When The Cathar is unveiled, exile up to three target nonland permanents until you lose the game. (Those permanents return under their owners’ control.)