Win Stupid Prizes

When Win Stupid Prizes enters the battlefield,
each player searches their library for a nonland
card and exiles it face down, then they create a
clue token for each card exiled this way.
Whenever a player sacrifices a clue, if they
control no clues, sacrifice Win stupid Prizes and
reveal all cards exiled by it, that player casts those spells without paying thier mana cost.