Demonic Counsellor

Flying, haste
{t}: Exile the top ten cards of your library and separate them into two piles. Hide those piles from your opponents and chose one of them. Target opponent does the same. Then each player puts all cards of the pile he or she has chosen into his or her graveyard and all other cards he or she exiled this way into his or her
hand. The player who chose the smaller pile this way loses 7 life.