Sense of Direction

Each player may put any number of cards in their
hands on top of their library. Then each player
shuffles their library and draws cards equal to the
number of cards they placed on top of their
library.
If this card is in your opening hand, you may exile
it. Then when you mulligan you may place any
number of cards in your hand on top of your
library. Then shuffle your library and draw that
many cards.