Deck of Many Things

{t}: Flip a coin. If you win the flip, exile all
nonland permanents your opponents control. If
you lose, exile all permanents you control. After
the flip, an opponent gains control of Deck of
Many Things. Activate this ability only during
your turn.
"In a multiverse of countless realities and incalculable variables, the temptation of the deck remains an inexplicable constant."
—Arcwell