Athena, the Wise

+4: Draw 4 cards and reveal them. Place any lands revealed this way onto the battlefield. Put any other cards on the bottom of your library.
0: Until the end of your next turn, swap your library with your graveyard. At the beginning of your upkeep, draw from your graveyard.
-20: You get an emblem with "Before your upkeep, you may tap any number of permanents. Draw that number of cards."