Joker, Clown Prince of Crime

Eminence - Whenever you discard one or more cards, if Joker, Clown Prince of Crime is in the command zone or on the battlefield, exile the top card of your library face down.

Whenever you commit a crime, put a smile counter on Joker, Clown Prince of Crime.

Remove five smile counters from Joker, Clown Prince of Crime: Choose a face-down card from exile at random. You may cast it without paying its mana cost. If you don't cast a card this way, flip it face up. (It stays in exile.)