Mr Collins Library worker

+20: He is not going for a biscuit. None of your creatures can get hurt and your plainswalkers all gain 57 loyalty
-3: Glasses. see your opponents everything and their hands and then their feet and library and graveyard. Then you win the game.
+20: Get out of my library now! First, put every card in a graveyard. Then put all cards in every graveyard in your library. Then Scry 5000