+1 Target player puts the top four cards of his or her library into his or her graveyard.
-2 You may cast target instant or sorcery card from an opponent’s graveyard without paying its mana cost.
0 Exile target creature card from a graveyard. Until end of turn you may have Vailyn, Treader of the Void becomes a copy of any card exiled this way and is still a Planeswalker. Prevent all damage that would be dealt to him this turn.