Goxon, The Last One

Trample, infect, double strike.
This card can't be countered. In addition to it's
cost pay {p/b}{p/b}{p/g}{p/g}{p/r}{p/r}{p/u}{p/u}{p/w}{p/w}, pay 50 life and
exile all permanents you control. This card's
power and toughness is equal to four time the
amount of cards exiled by this card.
When this card enters the battlefield exile your
hand.
When this card enters the battlefield, if it was
not cast, exile your library then shuffle your graveyard into your library.