Herothe, mystic creator

+2: Put the top 3 cards of your library onto the battlefield tapped, scry 2 then draw a card. Spells you cast this turn can't be counterd.
-3: Destroy target creature then Herothe, mystic creator deals damage equal to its converted mana cost +2 to target player.
-12: You get an emblem with "you gain control of all your opponents librarys, pernaments and hand", scry 7.