Desert Rogue

When Desert Rogue enters the battlefield, reveal
an amount of cards from the top of your library
equal to the number of deserts you control. If any
of the cards revealed are Rogues, you may put
them on the battlefield tapped. If any of the cards revealed are deserts, you may put them into your
hand. Put the rest at the bottom of your library
in any order.
Many things can be revealed when the desert shifts.