Dack, Kherstith Assailant

+2: Creatures you control can't be blocked this turn. You may draw a card. If you do, discard a card.
0: Whenever a creature you control deals combat damage to a player this turn, draw four cards, then discard four cards.
-6: You get an emblem with "If you draw a card while you library is empty, you win the game." Destroy all artifacts and draw that many cards.