Who's Next?

As an additional cost to cast "Who's Next?!", each player loses 4 life.

Flip a coin.
• If you win, target player exiles all permanents, cards in hand, and graveyard.
• If you lose, exile all your permanents, cards in hand, and graveyard.
If a player has no cards in play, hand, or graveyard, he loses the game.

"In the end, only fate decides who vanishes into nothingness."