Lunatic Cultist

{p/u}{p/b}{p/r}, {t}: Reveal the top two cards of your
library until you reveal two creature cards, then
put them face down next to Lunatic Cultist. Put
the rest on the bottom of your library. Put
Lunatic Cultist face down as well. Shuffle all
three cards together. Have an opponent guess
which card is Lunatic Cultist. If they guess right, Lunatic Cultist doesn't untap during your next
untap step. If they guess wrong, you may cast the revealed card without paying its mana cost. Put the other c