Blasphemous Tritheist

When Blasphemous Tritheist enters the battlefield, destroy each creature you control
with a converted mana cost other than three and
discard cards until you have three or fewer cards
in your hand. Your life total becomes three.
He denounced John Smith with a loud voice and an accusatory glare. John Smith dematerialized him
with a silent shrug and a flick of the finger.