Barley Bramblebill

+1: You may discard a card. If you do, each opponent loses life equal to its mana value.
-3: Exile the top two cards of your library. Until the end of your next turn, you may play them.
-7: You get an emblem with "Whenever you exile a nonland card from the top of your library, you may cast it without paying its mana cost this turn"