Zebu, Deeproot Descendant

+1: You lose 2 life; You may exile an instant or sorcery from a graveyard. You may cast it without paying its mana cost
-4: You lose 3 life; Draw three cards and add three mana of any color to your mana pool
-7: You get an emblem with "At the beginning of each upkeep, if you have less life than your opponent, you may take an extra turn after this one"