Maryon, Chaos Mage

: At the beginning of your upkeep, you may exile the top card of your library. Until the end of your turn, you may cast spells exiled this way.
+1: Look at the top card of your library. If it's a land card, you may put it onto the battlefield tapped. Otherwise, you may put it in your hand.
-X: Exile the top X cards of your library. Until the end of your turn, you may cast spells exiled this way without paying their mana costs.