Mark, Philosopher King

Whenever you draw a card you may first Scry 1
(Look at the top card of your library. You may put
that card on the bottom of your library.)
They're pills that create a sort of temporary forgettingness. So if somebody finds out how you do a
trick, you just give 'em one of these, and they forget
the whole thing. It's a mainstay of the magician's
toolkit, like how clowns always have a rag soaked in
ether. -G.O.B. Bluth