Dare, the Gauntlet Bearer

Flash, Hexproof, Haste
When Dare enters the battlefield, choose one
ability:
-{t}: Destroy all other permanents in
play. They cannot be regenerated.
-{t}: You cannot lose the game, and your
opponent cannot win the game until the end of
turn.
When Dare is put into graveyard from play,
return it to the battlefield tapped under
its owner control.