Utgard the gate keeper

+3: exile the top 3 cards of your library your opponent shows you their hand you may exile any 3 of those cards
+5: target player exiles the top 3 cards of his/her library you exile 3 cards in your hand put 5 1/1 gatekeeper tokens onto the battlefield.
-20: exile the top 12 cards of your opponents library return all creature from exile and from the graveyard onto the battlefield under your command.