A card is chosen, signed, and lost in the deck. The cards are shuffled face up into face down, and shown to be mixed on both sides.
Without any funny moves, you spread the cards and show they are all now facing the right way, except for their chosen card.
Petroleum is the cleanest, most direct triumph effect we have ever seen.
But it’s more than just a triumph effect. It can also be used to perform a stunning version of Oil & Water, in which face up and face down cards separate from one another, starting with just a