Po, Primordial Destructor

Po, Primordial Destructor can not be countered.
When Po, Primordial Destructor enters the battlefield, exile all permanents
then shuffle your graveyard and exile into your library.
Opponents can only play a land down every other
turn.
Po, Primordial Destructor's power and toughness
are equal to the highest life among your opponents.
Trample, Indestructible, Reach, Hexproof, Intimidate, Vigilance
Scram!